fetch: support passing config

For now not exposing it in CLI since there is no need/use yet.

Requirement for https://github.com/iterative/studio/pull/6541

.dvc/.gitignore

@@ -1,12 +1,3 @@
-/state
-/lock
 /config.local
-/updater
-/updater.lock
-/state-journal
-/state-wal
-/cache
-/pkg
-/repos
 /tmp
-/experiments
+/cache

.dvc/config

@@ -1,4 +0,0 @@
-['remote "dvc"']
-url = https://remote.dvc.org/dvc
-[core]
-remote = dvc

.github/ISSUE_TEMPLATE/epic_story.md

@@ -0,0 +1,60 @@
+---
+name: Epic/Story Issue Template
+about: Template for "top" level issues - Epics (>2 weeks) / Stories (<2 weeks)
+title: 'Epic: New Feature'
+labels: epic
+assignees:
+
+---
+
+## Summary / Background
+What do you want to achieve, why? business context
+...
+
+## Scope
+
+What will be impacted and what won't be?
+What needs implementation and what is invariant?
+e.g.
+- user should be able to run workflow X from UI
+- enable workflow Y, Z from CLI
+
+## Assumptions
+Product / UX assumptions as well as technical assumptions / limitations
+e.g.
+* Support only Python Runtime
+* Focus on DVC experiments only
+* Deployment environments don't change often and can be picked up from shared configuration
+
+## Open Questions
+e.g.
+- How should access control work for shared artifacts (workflow X)
+- Python runtime assumption - is it really valid? in light of <...>
+
+## Blockers / Dependencies
+List issues or other conditions / blockers
+
+## General Approach
+Invocation example:
+```shell
+$ mapper-run task.tar.gz --ray-cluster <ip>:<port>
+```
+
+## Steps
+
+### Must have (p1)
+- [ ] subissue2
+- [ ] step 2
+ - info
+ - info
+
+### Optional / followup (p2)
+- [ ] ⌛ step 3 wip
+- [ ] step 4
+
+## Timelines
+
+Put your estimations here. Update once certainty changes
+- end of week (Feb 3) for prototype with workflows X, Y
+- Feb 15 - MVP in production
+- Low priority followups can be done later

.github/mergify.yml

@@ -0,0 +1,10 @@
+pull_request_rules:
+  - name: backport patches to 2.x
+    conditions:
+      - base=main
+      - label=backport
+    actions:
+      backport:
+        branches:
+          - "2.x"
+        title: ({{ destination_branch }}) {{ title }}

.github/workflows/build.yaml

@@ -0,0 +1,47 @@
+name: Build package
+on:
+  push:
+    branches:
+    - main
+  release:
+    types: [released, prereleased]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  id-token: write
+
+jobs:
+  pip:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        fetch-depth: 0
+
+    - uses: actions/setup-python@v4
+      with:
+        python-version: 3.8
+
+    - run: python -m pip install --upgrade pip setuptools_scm build twine
+    - name: Force version for Test PyPI upload
+      if: ${{ !startsWith(github.ref, 'refs/tags') }}
+      run: echo version=$(python -m setuptools_scm | awk -F+ '{print $1}' | tail -1) >> $GITHUB_ENV
+
+    - run: |
+        echo 'PKG = "pip"'>dvc/_build.py
+        python -m build
+      env:
+        SETUPTOOLS_SCM_PRETEND_VERSION: ${{ env.version }}
+    - run: twine check --strict dist/*
+
+    - name: Publish to PyPI
+      if: github.event_name == 'release'
+      uses: pypa/gh-action-pypi-publish@release/v1
+
+    - name: Publish to Test PyPI
+      if: ${{ github.event_name == 'release' || (github.event_name == 'push' && github.ref == 'refs/heads/main') }}
+      uses: pypa/gh-action-pypi-publish@release/v1
+      with:
+        repository-url: https://test.pypi.org/legacy/
+        skip-existing: true

.github/workflows/codeql.yml

@@ -2,7 +2,7 @@ name: "CodeQL"
 
 on:
   push:
-    branches: ["main"]
+    branches: ["main", "2.x"]
   pull_request:
     branches: ["main"]
   schedule:

.github/workflows/packages.yaml

@@ -1,112 +0,0 @@
-name: Build packages
-on:
-  push:
-    branches:
-    - main
-  release:
-    types: [released, prereleased]
-  workflow_dispatch:
-
-permissions:  # added using https://github.com/step-security/secure-workflows
-  contents: read
-
-jobs:
-  binary:
-    permissions:
-      contents: write  # for actions/upload-release-asset to upload release asset
-    strategy:
-      matrix:
-        include:
-         - {pkg: "deb",  os: "ubuntu-20.04", asset: "dvc_${{ github.event.release.tag_name }}_amd64.deb"}
-         - {pkg: "rpm", os: "ubuntu-20.04", asset: "dvc-${{ github.event.release.tag_name }}-1.x86_64.rpm"}
-         - {pkg: "osxpkg", os: "macos-11", asset: "dvc-${{ github.event.release.tag_name }}.pkg"}
-         - {pkg: "exe",  os: "windows-2019", asset: "dvc-${{ github.event.release.tag_name }}.exe"}
-
-    name: ${{ matrix.pkg }}
-    runs-on: ${{ matrix.os }}
-    steps:
-    - uses: actions/checkout@v3
-      with:
-          fetch-depth: 0
-
-    - name: Set up Python 3.10
-      uses: actions/setup-python@v4
-      with:
-        python-version: "3.10"
-        cache: pip
-        cache-dependency-path: |
-          pyproject.toml
-          scripts/build-requirements.txt
-
-    - name: Set up Ruby 2.6
-      uses: ruby/setup-ruby@v1
-      if: matrix.pkg != 'exe'
-      with:
-        ruby-version: '2.6'
-
-    - name: Install fpm
-      if: matrix.pkg != 'exe'
-      run: gem install --no-document fpm
-
-    - name: Install deps
-      run: |
-        pip install --upgrade pip wheel setuptools
-        pip install .[all]
-        pip install -r scripts/build-requirements.txt
-
-    - name: Pull images
-      run: dvc pull
-
-    - name: Build ${{ matrix.pkg }}
-      run: python scripts/build.py ${{ matrix.pkg }}
-
-    - name: Publish ${{ matrix.pkg }}
-      if: github.event_name == 'release'
-      uses: actions/[email protected]
-      env:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      with:
-        upload_url: ${{ github.event.release.upload_url }}
-        asset_path: scripts/${{ matrix.pkg == 'exe' && 'innosetup' || 'fpm' }}/${{ matrix.asset }}
-        asset_name: ${{ matrix.asset }}
-        asset_content_type: binary/octet-stream
-
-  pip:
-    runs-on: ubuntu-20.04
-    steps:
-    - uses: actions/checkout@v3
-      with:
-        fetch-depth: 0
-
-    - name: Set up Python 3.8
-      uses: actions/setup-python@v4
-      with:
-        python-version: 3.8
-
-    - name: Install
-      run: pip install --upgrade pip wheel
-
-    - name: Force version for Test PyPI uploads
-      if: ${{ !startsWith(github.ref, 'refs/tags') }}
-      run: |
-        pip install setuptools_scm
-        echo version=$(python -m setuptools_scm | awk -F+ '{print $1}' | tail -1) >> $GITHUB_ENV
-
-    - name: Build packages
-      run: ./scripts/build_package.sh
-      env:
-        SETUPTOOLS_SCM_PRETEND_VERSION: ${{ env.version }}
-
-    - name: Publish packages to PyPI
-      if: github.event_name == 'release'
-      uses: pypa/gh-action-pypi-publish@release/v1
-      with:
-        password: ${{ secrets.PYPI_TOKEN }}
-
-    - name: Publish to Test PyPI
-      if: ${{ github.event_name == 'release' || (github.event_name == 'push' && github.ref == 'refs/heads/main') }}
-      uses: pypa/gh-action-pypi-publish@release/v1
-      with:
-        password: ${{ secrets.TEST_PYPI_TOKEN }}
-        repository_url: https://test.pypi.org/legacy/
-        skip_existing: true

.github/workflows/tests.yaml

@@ -2,7 +2,7 @@ name: Tests
 
 on:
   push:
-    branches: [main]
+    branches: [main, 2.x]
   pull_request:
   schedule:
     - cron: '5 1 * * *'  # every day at 01:05
@@ -42,6 +42,8 @@ jobs:
     - uses: pre-commit/[email protected]
     - name: run tests
       timeout-minutes: 40
+      env:
+        PYTHONUTF8: 1
       run: >
         pytest -n=logical --timeout=300 --durations=100
         --cov --cov-report=xml --cov-report=term

.pre-commit-config.yaml

@@ -29,25 +29,25 @@ repos:
       - id: beautysh
         args: ["-i", "2"]
   - repo: https://github.com/asottile/pyupgrade
-    rev: v3.3.1
+    rev: v3.9.0
     hooks:
       - id: pyupgrade
         args:
           - --py38-plus
   - repo: https://github.com/psf/black
-    rev: 23.1.0
+    rev: 23.7.0
     hooks:
       - id: black
   - repo: https://github.com/PyCQA/isort
     rev: 5.12.0
     hooks:
       - id: isort
-  - repo: https://github.com/charliermarsh/ruff-pre-commit
-    rev: 'v0.0.254'
+  - repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: 'v0.0.278'
     hooks:
       - id: ruff
   - repo: https://github.com/codespell-project/codespell
-    rev: v2.2.2
+    rev: v2.2.5
     hooks:
       - id: codespell
         additional_dependencies: ["tomli"]
@@ -61,6 +61,13 @@ repos:
           - flake8-debugger
           - flake8-string-format
           - flake8-typing-imports
+  - repo: https://github.com/PyCQA/bandit
+    rev: '1.7.5'
+    hooks:
+    - id: bandit
+      args: ["-c", "pyproject.toml", "--quiet", "--format=custom"]
+      files: ^dvc/
+      additional_dependencies: [".[toml]"]
   - repo: local
     hooks:
     - id: mypy

README.rst

@@ -280,8 +280,8 @@ Barrak, A., Eghan, E.E. and Adams, B. `On the Co-evolution of ML Pipelines and S
    :target: https://pypi.org/project/dvc
    :alt: PyPI Downloads
 
-.. |Packages| image:: https://img.shields.io/github/v/release/iterative/dvc?label=deb|pkg|rpm|exe&logo=GitHub
-   :target: https://github.com/iterative/dvc/releases/latest
+.. |Packages| image:: https://img.shields.io/badge/deb|pkg|rpm|exe-blue
+   :target: https://dvc.org/doc/install
    :alt: deb|pkg|rpm|exe
 
 .. |DOI| image:: https://img.shields.io/badge/DOI-10.5281/zenodo.3677553-blue.svg

dvc/__init__.py

@@ -4,6 +4,7 @@ DVC
 Make your data science projects reproducible and shareable.
 """
 import dvc.logger
+from dvc.build import PKG  # noqa: F401
 from dvc.version import __version__, version_tuple  # noqa: F401
 
 dvc.logger.setup()

dvc/__pyinstaller/__init__.py

@@ -0,0 +1,5 @@
+import os
+
+
+def get_hook_dirs():
+    return [os.path.dirname(__file__)]

dvc/__pyinstaller/hook-asyncssh.py

@@ -1 +1,2 @@
+# ruff: noqa: N999
 hiddenimports = ["win32timezone"]

dvc/__pyinstaller/hook-celery.py

@@ -1,3 +1,4 @@
+# ruff: noqa: N999
 # pylint: disable=import-error
 from PyInstaller.utils.hooks import collect_submodules, is_module_or_submodule
 

dvc/__pyinstaller/hook-dvc.py

@@ -1,3 +1,4 @@
+# ruff: noqa: N999
 from PyInstaller.utils.hooks import copy_metadata  # pylint:disable=import-error
 
 # needed for `dvc doctor` to show dep versions

dvc/__pyinstaller/hook-dvc.utils.flatten.py

@@ -1,3 +1,4 @@
+# ruff: noqa: N999
 from PyInstaller.utils.hooks import copy_metadata  # pylint:disable=import-error
 
 datas = copy_metadata("flatten-dict")

dvc/__pyinstaller/hook-dvc_task.py

@@ -1,3 +1,4 @@
+# ruff: noqa: N999
 # pylint: disable=import-error
 from PyInstaller.utils.hooks import collect_submodules
 

dvc/__pyinstaller/hook-fsspec.py

@@ -1 +1,2 @@
+# ruff: noqa: N999
 hiddenimports = ["fsspec.implementations.memory"]

dvc/__pyinstaller/hook-pydrive2.py

@@ -1,3 +1,4 @@
+# ruff: noqa: N999
 from PyInstaller.utils.hooks import copy_metadata  # pylint:disable=import-error
 
 datas = copy_metadata("pydrive2")

dvc/_debug.py

@@ -198,33 +198,84 @@ def debugtools(args: Optional["Namespace"] = None, **kwargs):
 def add_debugging_flags(parser):
     from argparse import SUPPRESS
 
-    parser.add_argument("--cprofile", action="store_true", default=False, help=SUPPRESS)
-    parser.add_argument("--yappi", action="store_true", default=False, help=SUPPRESS)
+    # For detailed info see:
+    # https://github.com/iterative/dvc/wiki/Debugging,-Profiling-and-Benchmarking-DVC
+    args, _ = parser.parse_known_args()
+    verbose = args.verbose
+
+    def debug_help(msg):
+        if verbose:
+            return msg
+        return SUPPRESS
+
+    parser = parser.add_argument_group("debug options")
+
+    parser.add_argument(
+        "--cprofile",
+        action="store_true",
+        default=False,
+        help=debug_help("Generate cprofile data for tools like snakeviz / tuna"),
+    )
+    parser.add_argument(
+        "--cprofile-dump", help=debug_help("Location to dump cprofile file")
+    )
+    parser.add_argument(
+        "--yappi",
+        action="store_true",
+        default=False,
+        help=debug_help(
+            "Generate a callgrind file for use with tools like "
+            "kcachegrind / qcachegrind"
+        ),
+    )
     parser.add_argument(
         "--yappi-separate-threads",
         action="store_true",
         default=False,
-        help=SUPPRESS,
+        help=debug_help("Generate one callgrind file per thread"),
     )
     parser.add_argument(
-        "--viztracer", action="store_true", default=False, help=SUPPRESS
-    )
-    parser.add_argument("--viztracer-depth", type=int, help=SUPPRESS)
-    parser.add_argument(
-        "--viztracer-async", action="store_true", default=False, help=SUPPRESS
-    )
-    parser.add_argument("--cprofile-dump", help=SUPPRESS)
-    parser.add_argument("--pdb", action="store_true", default=False, help=SUPPRESS)
-    parser.add_argument(
-        "--instrument", action="store_true", default=False, help=SUPPRESS
+        "--viztracer",
+        action="store_true",
+        default=False,
+        help=debug_help("Generate a viztracer file for use with vizviewer"),
     )
     parser.add_argument(
-        "--instrument-open", action="store_true", default=False, help=SUPPRESS
+        "--viztracer-depth",
+        type=int,
+        help=debug_help("Set viztracer maximum stack depth"),
+    )
+    parser.add_argument(
+        "--viztracer-async",
+        action="store_true",
+        default=False,
+        help=debug_help("Treat async tasks as threads"),
+    )
+    parser.add_argument(
+        "--pdb",
+        action="store_true",
+        default=False,
+        help=debug_help("Drop into the pdb/ipdb debugger on any exception"),
+    )
+    parser.add_argument(
+        "--instrument",
+        action="store_true",
+        default=False,
+        help=debug_help("Use pyinstrument CLI profiler"),
+    )
+    parser.add_argument(
+        "--instrument-open",
+        action="store_true",
+        default=False,
+        help=debug_help("Use pyinstrument web profiler"),
     )
     parser.add_argument(
         "--show-stack",
         "--ss",
         action="store_true",
         default=False,
-        help=SUPPRESS,
+        help=debug_help(
+            r"Use Ctrl+T on macOS or Ctrl+\ on Linux to print the stack "
+            "frame currently executing. Unavailable on Windows."
+        ),
     )

dvc/analytics.py

@@ -47,7 +47,7 @@ def is_enabled():
     enabled = not os.getenv(DVC_NO_ANALYTICS)
     if enabled:
         enabled = to_bool(
-            Config(validate=False).get("core", {}).get("analytics", "true")
+            Config.from_cwd(validate=False).get("core", {}).get("analytics", "true")
         )
 
     logger.debug("Analytics is %sabled.", "en" if enabled else "dis")

dvc/annotations.py

@@ -2,6 +2,7 @@ from dataclasses import asdict, dataclass, field, fields
 from typing import Any, ClassVar, Dict, List, Optional
 
 from funcy import compact
+from voluptuous import Required
 
 
 @dataclass
@@ -16,11 +17,23 @@ class Annotation:
     labels: List[str] = field(default_factory=list)
     meta: Dict[str, Any] = field(default_factory=dict)
 
-    def update(self, **kwargs) -> "Annotation":
-        for attr, value in kwargs.items():
-            if value and hasattr(self, attr):
-                setattr(self, attr, value)
-        return self
+    def to_dict(self) -> Dict[str, str]:
+        return compact(asdict(self))
+
+
+@dataclass
+class Artifact:
+    PARAM_PATH: ClassVar[str] = "path"
+    PARAM_DESC: ClassVar[str] = "desc"
+    PARAM_TYPE: ClassVar[str] = "type"
+    PARAM_LABELS: ClassVar[str] = "labels"
+    PARAM_META: ClassVar[str] = "meta"
+
+    path: str
+    desc: Optional[str] = None
+    type: Optional[str] = None  # noqa: A003
+    labels: List[str] = field(default_factory=list)
+    meta: Dict[str, Any] = field(default_factory=dict)
 
     def to_dict(self) -> Dict[str, str]:
         return compact(asdict(self))
@@ -33,3 +46,7 @@ ANNOTATION_SCHEMA = {
     Annotation.PARAM_LABELS: [str],
     Annotation.PARAM_META: object,
 }
+ARTIFACT_SCHEMA = {
+    Required(Artifact.PARAM_PATH): str,
+    **ANNOTATION_SCHEMA,  # type: ignore[arg-type]
+}

dvc/api/__init__.py

@@ -2,12 +2,17 @@ from dvc.fs.dvc import _DVCFileSystem as DVCFileSystem
 
 from .data import open  # pylint: disable=redefined-builtin
 from .data import get_url, read
-from .experiments import make_checkpoint
+from .experiments import exp_save, exp_show
+from .scm import all_branches, all_commits, all_tags
 from .show import metrics_show, params_show
 
 __all__ = [
+    "all_branches",
+    "all_commits",
+    "all_tags",
+    "exp_save",
+    "exp_show",
     "get_url",
-    "make_checkpoint",
     "open",
     "params_show",
     "metrics_show",

dvc/api/data.py

@@ -1,12 +1,30 @@
 from contextlib import _GeneratorContextManager as GCM
-from typing import Optional
+from contextlib import contextmanager
+from typing import Any, Dict, Optional
 
 from funcy import reraise
 
-from dvc.exceptions import OutputNotFoundError, PathMissingError
+from dvc.exceptions import FileMissingError, OutputNotFoundError, PathMissingError
 from dvc.repo import Repo
 
 
+@contextmanager
+def _wrap_exceptions(repo, url):
+    from dvc.config import NoRemoteError
+    from dvc.exceptions import NoOutputInExternalRepoError, NoRemoteInExternalRepoError
+
+    try:
+        yield
+    except NoRemoteError as exc:
+        raise NoRemoteInExternalRepoError(url) from exc
+    except OutputNotFoundError as exc:
+        if exc.repo is repo:
+            raise NoOutputInExternalRepoError(exc.output, repo.root_dir, url) from exc
+        raise
+    except FileMissingError as exc:
+        raise PathMissingError(exc.path, url) from exc
+
+
 def get_url(path, repo=None, rev=None, remote=None):
     """
     Returns the URL to the storage location of a data file or directory tracked
@@ -18,19 +36,22 @@ def get_url(path, repo=None, rev=None, remote=None):
     NOTE: This function does not check for the actual existence of the file or
     directory in the remote storage.
     """
-    with Repo.open(repo, rev=rev, subrepos=True, uninitialized=True) as _repo:
-        fs_path = _repo.dvcfs.from_os_path(path)
-        with reraise(FileNotFoundError, PathMissingError(path, repo)):
-            info = _repo.dvcfs.info(fs_path)
+    from dvc.config import NoRemoteError
+    from dvc_data.index import StorageKeyError
 
-        dvc_info = info.get("dvc_info")
-        if not dvc_info:
-            raise OutputNotFoundError(path, repo)
-
-        dvc_repo = info["repo"]  # pylint: disable=unsubscriptable-object
-        md5 = dvc_info["md5"]
-
-        return dvc_repo.cloud.get_url_for(remote, checksum=md5)
+    repo_kwargs: Dict[str, Any] = {}
+    if remote:
+        repo_kwargs["config"] = {"core": {"remote": remote}}
+    with Repo.open(
+        repo, rev=rev, subrepos=True, uninitialized=True, **repo_kwargs
+    ) as _repo:
+        index, entry = _repo.get_data_index_entry(path)
+        with reraise(
+            (StorageKeyError, ValueError),
+            NoRemoteError(f"no remote specified in {_repo}"),
+        ):
+            remote_fs, remote_path = index.storage_map.get_remote(entry)
+            return remote_fs.unstrip_protocol(remote_path)
 
 
 class _OpenContextManager(GCM):
@@ -53,6 +74,7 @@ def open(  # noqa, pylint: disable=redefined-builtin
     remote: Optional[str] = None,
     mode: str = "r",
     encoding: Optional[str] = None,
+    config: Optional[Dict[str, Any]] = None,
 ):
     """
     Opens a file tracked in a DVC project.
@@ -94,6 +116,8 @@ def open(  # noqa, pylint: disable=redefined-builtin
             Defaults to None.
             This should only be used in text mode.
             Mirrors the namesake parameter in builtin `open()`_.
+        config(dict, optional): config to be passed to the DVC repository.
+            Defaults to None.
 
     Returns:
         _OpenContextManager: A context manager that generatse a corresponding
@@ -189,25 +213,71 @@ def open(  # noqa, pylint: disable=redefined-builtin
         "rev": rev,
         "mode": mode,
         "encoding": encoding,
+        "config": config,
     }
     return _OpenContextManager(_open, args, kwargs)
 
 
-def _open(path, repo=None, rev=None, remote=None, mode="r", encoding=None):
-    with Repo.open(repo, rev=rev, subrepos=True, uninitialized=True) as _repo:
-        with _repo.open_by_relpath(
-            path, remote=remote, mode=mode, encoding=encoding
-        ) as fd:
-            yield fd
+def _open(path, repo=None, rev=None, remote=None, mode="r", encoding=None, config=None):
+    if remote:
+        if config is not None:
+            raise ValueError(
+                "can't specify both `remote` and `config` at the same time"
+            )
+        config = {"core": {"remote": remote}}
+
+    repo_kwargs: Dict[str, Any] = {
+        "subrepos": True,
+        "uninitialized": True,
+        "config": config,
+    }
+
+    with Repo.open(repo, rev=rev, **repo_kwargs) as _repo:
+        with _wrap_exceptions(_repo, path):
+            import os
+            from typing import TYPE_CHECKING, Union
+
+            from dvc.exceptions import IsADirectoryError as DvcIsADirectoryError
+            from dvc.fs.data import DataFileSystem
+            from dvc.fs.dvc import DVCFileSystem
+
+            if TYPE_CHECKING:
+                from dvc.fs import FileSystem
+
+            fs: Union["FileSystem", DataFileSystem, DVCFileSystem]
+            if os.path.isabs(path):
+                fs = DataFileSystem(index=_repo.index.data["local"])
+                fs_path = path
+            else:
+                fs = DVCFileSystem(repo=_repo, subrepos=True)
+                fs_path = fs.from_os_path(path)
+
+            try:
+                with fs.open(
+                    fs_path,
+                    mode=mode,
+                    encoding=encoding,
+                ) as fobj:
+                    yield fobj
+            except FileNotFoundError as exc:
+                raise FileMissingError(path) from exc
+            except IsADirectoryError as exc:
+                raise DvcIsADirectoryError(f"'{path}' is a directory") from exc
 
 
-def read(path, repo=None, rev=None, remote=None, mode="r", encoding=None):
+def read(path, repo=None, rev=None, remote=None, mode="r", encoding=None, config=None):
     """
     Returns the contents of a tracked file (by DVC or Git). For Git repos, HEAD
     is used unless a rev argument is supplied. The default remote is tried
     unless a remote argument is supplied.
     """
     with open(
-        path, repo=repo, rev=rev, remote=remote, mode=mode, encoding=encoding
+        path,
+        repo=repo,
+        rev=rev,
+        remote=remote,
+        mode=mode,
+        encoding=encoding,
+        config=config,
     ) as fd:
         return fd.read()

dvc/api/experiments.py

@@ -1,33 +1,120 @@
-import builtins
-import os
-from time import sleep
+from typing import Dict, List, Optional, Union
+
+from rich.text import Text
 
-from dvc.env import DVC_CHECKPOINT, DVC_ROOT
 from dvc.repo import Repo
-from dvc.stage.monitor import CheckpointTask
+from dvc.repo.experiments.show import tabulate
 
 
-def make_checkpoint():
+def exp_save(
+    name: Optional[str] = None,
+    force: bool = False,
+    include_untracked: Optional[List[str]] = None,
+):
     """
-    Signal DVC to create a checkpoint experiment.
+    Create a new DVC experiment using `exp save`.
 
-    If the current process is being run from DVC, this function will block
-    until DVC has finished creating the checkpoint. Otherwise, this function
-    will return immediately.
+    See https://dvc.org/doc/command-reference/exp/save.
+
+    Args:
+        name (str, optional): specify a name for this experiment.
+            If `None`, a default one will be generated, such as `urban-sign`.
+            Defaults to `None`.
+        force (bool):  overwrite the experiment if an experiment with the same
+            name already exists.
+            Defaults to `False`.
+        include_untracked (List[str], optional): specify untracked file(s) to
+            be included in the saved experiment.
+            Defaults to `None`.
+
+    Returns:
+        str: The `Git revision`_ of the created experiment.
+
+    Raises:
+        ExperimentExistsError: If an experiment with `name` already exists and
+            `force=False`.
+
+    .. _Git revision:
+        https://git-scm.com/docs/revisions
     """
-    if os.getenv(DVC_CHECKPOINT) is None:
-        return
+    with Repo() as repo:
+        return repo.experiments.save(
+            name=name, force=force, include_untracked=include_untracked
+        )
 
-    root_dir = os.getenv(DVC_ROOT, Repo.find_root())
-    signal_file = os.path.join(
-        root_dir, Repo.DVC_DIR, "tmp", CheckpointTask.SIGNAL_FILE
-    )
 
-    with builtins.open(signal_file, "w", encoding="utf-8") as fobj:
-        # NOTE: force flushing/writing empty file to disk, otherwise when
-        # run in certain contexts (pytest) file may not actually be written
-        fobj.write("")
-        fobj.flush()
-        os.fsync(fobj.fileno())
-    while os.path.exists(signal_file):
-        sleep(0.1)
+def _postprocess(exp_rows):
+    for exp_row in exp_rows:
+        for k, v in exp_row.items():
+            if isinstance(v, Text):
+                v_str = str(v)
+                try:
+                    exp_row[k] = float(v_str)
+                except ValueError:
+                    exp_row[k] = v_str
+
+            if not exp_row[k]:
+                exp_row[k] = None
+
+    return exp_rows
+
+
+def exp_show(
+    repo: Optional[str] = None,
+    revs: Optional[Union[str, List[str]]] = None,
+    num: int = 1,
+    param_deps: bool = False,
+    force: bool = False,
+    config: Optional[Dict] = None,
+) -> List[Dict]:
+    """Get DVC experiments tracked in `repo`.
+
+    Without arguments, this function will retrieve all experiments derived from
+    the Git `HEAD`.
+
+    See the options below to customize the experiments retrieved.
+
+    Args:
+        repo (str, optional): location of the DVC repository.
+            Defaults to the current project (found by walking up from the
+            current working directory tree).
+            It can be a URL or a file system path.
+            Both HTTP and SSH protocols are supported for online Git repos
+            (e.g. [user@]server:project.git).
+        revs (Union[str, List[str]], optional): Git revision(s) (e.g. branch,
+            tag, SHA commit) to use as a reference point to start listing
+            experiments.
+            Defaults to `None`, which will use `HEAD` as starting point.
+        num (int, optional): show experiments from the last `num` commits
+            (first parents) starting from the `revs` baseline.
+            Give a negative value to include all first-parent commits (similar
+            to `git log -n`).
+            Defaults to 1.
+        param_deps (bool, optional): include only parameters that are stage
+            dependencies.
+            Defaults to `False`.
+        force (bool, optional): force re-collection of experiments instead of
+            loading from internal experiments cache.
+            DVC caches `exp_show` data for completed experiments to improve
+            performance of subsequent calls.
+            When `force` is specified, DVC will reload all experiment data and
+            ignore any previously cached results.
+            Defaults to `False`.
+        config (dict, optional): config to be passed through to DVC project.
+            Defaults to `None`.
+
+    Returns:
+        List[Dict]: Each item in the list will contain a dictionary with
+            the info for an individual experiment.
+            See Examples below.
+    """
+    with Repo.open(repo, config=config) as _repo:
+        experiments = _repo.experiments.show(
+            revs=revs,
+            num=num,
+            param_deps=param_deps,
+            force=force,
+        )
+        td, _ = tabulate(experiments, fill_value=None)
+
+        return _postprocess(td.as_dict())

dvc/api/scm.py

@@ -0,0 +1,54 @@
+from typing import List, Optional
+
+from dvc.repo import Repo
+
+
+def all_branches(repo: Optional[str] = None) -> List[str]:
+    """Get all Git branches in a DVC repository.
+
+    Args:
+        repo (str, optional): location of the DVC repository.
+            Defaults to the current project (found by walking up from the
+            current working directory tree).
+            It can be a URL or a file system path.
+            Both HTTP and SSH protocols are supported for online Git repos
+            (e.g. [user@]server:project.git).
+    Returns:
+        List[str]: Names of the Git branches.
+    """
+    with Repo.open(repo) as _repo:
+        return _repo.scm.list_branches()
+
+
+def all_commits(repo: Optional[str] = None) -> List[str]:
+    """Get all Git commits in a DVC repository.
+
+    Args:
+        repo (str, optional): location of the DVC repository.
+            Defaults to the current project (found by walking up from the
+            current working directory tree).
+            It can be a URL or a file system path.
+            Both HTTP and SSH protocols are supported for online Git repos
+            (e.g. [user@]server:project.git).
+    Returns:
+        List[str]: SHAs of the Git commits.
+    """
+    with Repo.open(repo) as _repo:
+        return _repo.scm.list_all_commits()
+
+
+def all_tags(repo: Optional[str] = None) -> List[str]:
+    """Get all Git tags in a DVC repository.
+
+    Args:
+        repo (str, optional): location of the DVC repository.
+            Defaults to the current project (found by walking up from the
+            current working directory tree).
+            It can be a URL or a file system path.
+            Both HTTP and SSH protocols are supported for online Git repos
+            (e.g. [user@]server:project.git).
+    Returns:
+        List[str]: Names of the Git tags.
+    """
+    with Repo.open(repo) as _repo:
+        return _repo.scm.list_tags()

dvc/api/show.py

@@ -41,6 +41,7 @@ def metrics_show(
     *targets: str,
     repo: Optional[str] = None,
     rev: Optional[str] = None,
+    config: Optional[Dict] = None,
 ) -> Dict:
     """Get metrics tracked in `repo`.
 
@@ -69,6 +70,8 @@ def metrics_show(
             hash or a dvc experiment name.
             If `repo` is not a Git repo, this option is ignored.
             If `None`, the current working tree will be used.
+        config (dict, optional): config to be passed through to DVC project.
+            Defaults to `None`.
 
     Returns:
         Dict: See Examples below.
@@ -136,7 +139,7 @@ def metrics_show(
         https://git-scm.com/docs/revisions
     """
 
-    with Repo.open(repo) as _repo:
+    with Repo.open(repo, config=config) as _repo:
         metrics = _repo.metrics.show(
             targets=targets,
             revs=rev if rev is None else [rev],
@@ -157,6 +160,7 @@ def params_show(
     stages: Optional[Union[str, Iterable[str]]] = None,
     rev: Optional[str] = None,
     deps: bool = False,
+    config: Optional[Dict] = None,
 ) -> Dict:
     """Get parameters tracked in `repo`.
 
@@ -195,6 +199,8 @@ def params_show(
         deps (bool, optional): Whether to retrieve only parameters that are
             stage dependencies or not.
             Defaults to `False`.
+        config (dict, optional): config to be passed through to DVC project.
+            Defaults to `None`.
 
     Returns:
         Dict: See Examples below.
@@ -379,7 +385,7 @@ def params_show(
     if isinstance(stages, str):
         stages = [stages]
 
-    with Repo.open(repo) as _repo:
+    with Repo.open(repo, config=config) as _repo:
         params = _repo.params.show(
             revs=rev if rev is None else [rev],
             targets=targets,

dvc/build.py

@@ -0,0 +1,10 @@
+from typing import Optional
+
+try:
+    # file is created during dvc build
+    # pylint:disable=unused-import
+    from . import _build  # type: ignore[attr-defined, import]
+
+    PKG: Optional[str] = _build.PKG  # type: ignore[assignment]
+except ImportError:
+    PKG = None  # type: ignore[assignment]

dvc/cachemgr.py

@@ -1,29 +1,41 @@
 import os
+from typing import TYPE_CHECKING, Optional, Tuple
 
 from dvc.fs import GitFileSystem, Schemes
 from dvc_data.hashfile.db import get_odb
+from dvc_data.hashfile.hash import DEFAULT_ALGORITHM
+
+if TYPE_CHECKING:
+    from dvc.repo import Repo
+
+LEGACY_HASH_NAMES = {"md5-dos2unix", "params"}
 
 
-def _get_odb(repo, settings, fs=None):
+def _get_odb(
+    repo,
+    settings,
+    fs=None,
+    prefix: Optional[Tuple[str, ...]] = None,
+    hash_name: Optional[str] = None,
+    **kwargs,
+):
     from dvc.fs import get_cloud_fs
 
     if not settings:
         return None
 
-    cls, config, fs_path = get_cloud_fs(repo, **settings)
+    cls, config, fs_path = get_cloud_fs(repo.config, **settings)
     fs = fs or cls(**config)
+    if prefix:
+        fs_path = fs.path.join(fs_path, *prefix)
+    if hash_name:
+        config["hash_name"] = hash_name
     return get_odb(fs, fs_path, state=repo.state, **config)
 
 
 class CacheManager:
     CACHE_DIR = "cache"
-    CLOUD_SCHEMES = [
-        Schemes.S3,
-        Schemes.GS,
-        Schemes.SSH,
-        Schemes.HDFS,
-        Schemes.WEBHDFS,
-    ]
+    FILES_DIR = "files"
 
     def __init__(self, repo):
         self._repo = repo
@@ -53,25 +65,74 @@ class CacheManager:
         if not isinstance(repo.fs, GitFileSystem):
             kwargs["fs"] = repo.fs
 
-        odb = _get_odb(repo, settings, **kwargs)
+        odb = _get_odb(
+            repo,
+            settings,
+            prefix=(self.FILES_DIR, DEFAULT_ALGORITHM),
+            **kwargs,
+        )
         self._odb["repo"] = odb
         self._odb[Schemes.LOCAL] = odb
+        legacy_odb = _get_odb(repo, settings, hash_name="md5-dos2unix", **kwargs)
+        self._odb["legacy"] = legacy_odb
 
     def _init_odb(self, schemes):
         for scheme in schemes:
             remote = self.config.get(scheme)
             settings = {"name": remote} if remote else None
-            self._odb[scheme] = _get_odb(self._repo, settings)
+            self._odb[scheme] = _get_odb(
+                self._repo,
+                settings,
+                prefix=(self.FILES_DIR, DEFAULT_ALGORITHM),
+            )
 
     def __getattr__(self, name):
-        if name not in self._odb and name in self.CLOUD_SCHEMES:
-            self._init_odb([name])
-
         try:
             return self._odb[name]
         except KeyError as exc:
             raise AttributeError from exc
 
     def by_scheme(self):
-        self._init_odb(self.CLOUD_SCHEMES)
         yield from self._odb.items()
+
+    @property
+    def local_cache_dir(self) -> str:
+        """Return base local cache directory without any prefixes.
+
+        (i.e. `dvc cache dir`).
+        """
+        return self.legacy.path
+
+
+def migrate_2_to_3(repo: "Repo", dry: bool = False):
+    """Migrate legacy 2.x objects to 3.x cache.
+
+    Legacy 'md5-dos2unix' objects will be re-hashed with 'md5', added to 3.x cache,
+    and then a link from the legacy 2.x location to the 3.x location will be created.
+    """
+    from dvc.fs.callbacks import TqdmCallback
+    from dvc.ui import ui
+    from dvc_data.hashfile.db.migrate import migrate, prepare
+
+    src = repo.cache.legacy
+    dest = repo.cache.local
+    if dry:
+        oids = list(src._list_oids())  # pylint: disable=protected-access
+        ui.write(
+            f"{len(oids)} files will be re-hashed and migrated to the DVC 3.0 cache "
+            "location."
+        )
+        return
+
+    with TqdmCallback(
+        desc="Computing DVC 3.0 hashes",
+        unit="files",
+    ) as cb:
+        migration = prepare(src, dest, callback=cb)
+
+    with TqdmCallback(
+        desc="Migrating to DVC 3.0 cache",
+        unit="files",
+    ) as cb:
+        count = migrate(migration, callback=cb)
+    ui.write(f"Migrated {count} files to DVC 3.0 cache location.")

dvc/cli/__init__.py

@@ -75,7 +75,7 @@ def _log_exceptions(exc: Exception) -> Optional[int]:
     from dvc.fs import AuthError, ConfigError, RemoteMissingDepsError
 
     if isinstance(exc, RemoteMissingDepsError):
-        from dvc.utils.pkg import PKG
+        from dvc import PKG
 
         proto = exc.protocol
         by_pkg = {
@@ -83,9 +83,9 @@ def _log_exceptions(exc: Exception) -> Optional[int]:
             "conda": f"conda install -c conda-forge dvc-{proto}",
         }
 
-        cmd = by_pkg.get(PKG)
-        if cmd:
+        if PKG in by_pkg:
             link = format_link("https://dvc.org/doc/install")
+            cmd = by_pkg.get(PKG)
             hint = (
                 "To install dvc with those dependencies, run:\n"
                 "\n"
@@ -190,10 +190,9 @@ def main(argv=None):  # noqa: C901, PLR0912, PLR0915
         if level and level <= logging.DEBUG:
             from platform import platform, python_implementation, python_version
 
-            from dvc import __version__
-            from dvc.utils.pkg import PKG
+            from dvc import PKG, __version__
 
-            pyv = " ".join([python_implementation(), python_version()])
+            pyv = f"{python_implementation()} {python_version()}"
             pkg = f" ({PKG})" if PKG else ""
             logger.debug("v%s%s, %s on %s", __version__, pkg, pyv, platform())
             logger.debug("command: %s", " ".join(argv or sys.argv))
@@ -245,7 +244,7 @@ def main(argv=None):  # noqa: C901, PLR0912, PLR0915
     finally:
         logger.setLevel(outer_log_level)
 
-        from dvc.external_repo import clean_repos
+        from dvc.repo.open_repo import clean_repos
 
         # Remove cached repos in the end of the call, these are anonymous
         # so won't be reused by any other subsequent run anyway.

dvc/cli/actions.py

@@ -1,20 +0,0 @@
-from argparse import _AppendAction
-
-
-class CommaSeparatedArgs(_AppendAction):  # pylint: disable=protected-access
-    def __call__(self, parser, namespace, values, option_string=None):  # noqa: ARG002
-        from funcy import ldistinct
-
-        items = getattr(namespace, self.dest) or []
-        items.extend(map(str.strip, values.split(",")))
-        setattr(namespace, self.dest, ldistinct(items))
-
-
-class KeyValueArgs(_AppendAction):
-    def __call__(self, parser, namespace, values, option_string=None):  # noqa: ARG002
-        items = getattr(namespace, self.dest) or {}
-        for value in filter(bool, values):
-            key, _, value = value.partition("=")
-            items[key.strip()] = value
-
-        setattr(namespace, self.dest, items)

dvc/cli/parser.py

@@ -41,7 +41,6 @@ from dvc.commands import (
     remove,
     repro,
     root,
-    run,
     stage,
     unprotect,
     update,
@@ -62,7 +61,6 @@ COMMANDS = [
     remove,
     move,
     unprotect,
-    run,
     repro,
     data_sync,
     gc,
@@ -139,7 +137,6 @@ def get_parent_parser():
     from dvc._debug import add_debugging_flags
 
     parent_parser = argparse.ArgumentParser(add_help=False)
-    add_debugging_flags(parent_parser)
     log_level_group = parent_parser.add_mutually_exclusive_group()
     log_level_group.add_argument(
         "-q", "--quiet", action="count", default=0, help="Be quiet."
@@ -147,6 +144,7 @@ def get_parent_parser():
     log_level_group.add_argument(
         "-v", "--verbose", action="count", default=0, help="Be verbose."
     )
+    add_debugging_flags(parent_parser)
 
     return parent_parser
 

dvc/cli/utils.py

@@ -16,9 +16,7 @@ def append_doc_link(help_message, path):
     if not path:
         return help_message
     doc_base = "https://man.dvc.org/"
-    return "{message}\nDocumentation: {link}".format(
-        message=help_message, link=format_link(doc_base + path)
-    )
+    return f"{help_message}\nDocumentation: {format_link(doc_base + path)}"
 
 
 def hide_subparsers_from_help(subparsers):

dvc/commands/add.py

@@ -2,68 +2,61 @@ import argparse
 import logging
 
 from dvc.cli import completion
-from dvc.cli.actions import KeyValueArgs
 from dvc.cli.command import CmdBase
 from dvc.cli.utils import append_doc_link
 
 logger = logging.getLogger(__name__)
 
 
-def _add_annotating_args(parser: argparse.ArgumentParser) -> None:
-    parser.add_argument(
-        "--desc",
-        type=str,
-        metavar="<text>",
-        help="User description of the data.",
-    )
-    parser.add_argument(
-        "--meta",
-        metavar="key=value",
-        nargs=1,
-        action=KeyValueArgs,
-        help="Custom metadata to add to the data.",
-    )
-    parser.add_argument(
-        "--label",
-        dest="labels",
-        type=str,
-        action="append",
-        metavar="<str>",
-        help="Label for the data.",
-    )
-    parser.add_argument(
-        "--type",
-        type=str,
-        metavar="<str>",
-        help="Type of the data.",
-    )
-
-
 class CmdAdd(CmdBase):
+    def validate_args(self) -> None:
+        from dvc.exceptions import InvalidArgumentError
+
+        args = self.args
+        invalid_opt = None
+
+        if args.to_remote or args.out:
+            message = "{option} can't be used with "
+            message += "--to-remote" if args.to_remote else "--out"
+            if len(args.targets) != 1:
+                invalid_opt = "multiple targets"
+            elif args.glob:
+                invalid_opt = "--glob option"
+            elif args.no_commit:
+                invalid_opt = "--no-commit option"
+        else:
+            message = "{option} can't be used without --to-remote"
+            if args.remote:
+                invalid_opt = "--remote"
+            elif args.remote_jobs:
+                invalid_opt = "--remote-jobs"
+
+        if invalid_opt is not None:
+            raise InvalidArgumentError(message.format(option=invalid_opt))
+
     def run(self):
-        from dvc.exceptions import DvcException, RecursiveAddingWhileUsingFilename
+        from dvc.exceptions import DvcException, InvalidArgumentError
 
         try:
-            if len(self.args.targets) > 1 and self.args.file:
-                raise RecursiveAddingWhileUsingFilename()
+            self.validate_args()
+        except InvalidArgumentError:
+            logger.exception("")
+            return 1
 
+        try:
             self.repo.add(
                 self.args.targets,
-                recursive=self.args.recursive,
                 no_commit=self.args.no_commit,
-                fname=self.args.file,
-                external=self.args.external,
                 glob=self.args.glob,
-                desc=self.args.desc,
                 out=self.args.out,
-                type=self.args.type,
-                labels=self.args.labels,
-                meta=self.args.meta,
                 remote=self.args.remote,
                 to_remote=self.args.to_remote,
-                jobs=self.args.jobs,
+                remote_jobs=self.args.remote_jobs,
+                force=self.args.force,
             )
-
+        except FileNotFoundError:
+            logger.exception("")
+            return 1
         except DvcException:
             logger.exception("")
             return 1
@@ -80,36 +73,18 @@ def add_parser(subparsers, parent_parser):
         help=ADD_HELP,
         formatter_class=argparse.RawDescriptionHelpFormatter,
     )
-    parser.add_argument(
-        "-R",
-        "--recursive",
-        action="store_true",
-        default=False,
-        help="Recursively add files under directory targets.",
-    )
     parser.add_argument(
         "--no-commit",
         action="store_true",
         default=False,
         help="Don't put files/directories into cache.",
     )
-    parser.add_argument(
-        "--external",
-        action="store_true",
-        default=False,
-        help="Allow targets that are outside of the DVC repository.",
-    )
     parser.add_argument(
         "--glob",
         action="store_true",
         default=False,
         help="Allows targets containing shell-style wildcards.",
     )
-    parser.add_argument(
-        "--file",
-        help="Specify name of the .dvc file this command will generate.",
-        metavar="<filename>",
-    )
     parser.add_argument(
         "-o",
         "--out",
@@ -129,8 +104,7 @@ def add_parser(subparsers, parent_parser):
         metavar="<name>",
     )
     parser.add_argument(
-        "-j",
-        "--jobs",
+        "--remote-jobs",
         type=int,
         help=(
             "Only used along with '--to-remote'. "
@@ -140,8 +114,13 @@ def add_parser(subparsers, parent_parser):
         ),
         metavar="<number>",
     )
-
-    _add_annotating_args(parser)
+    parser.add_argument(
+        "-f",
+        "--force",
+        action="store_true",
+        default=False,
+        help="Override local file or folder if exists.",
+    )
     parser.add_argument(
         "targets", nargs="+", help="Input files/directories to add."
     ).complete = completion.FILE

dvc/commands/cache.py

@@ -2,6 +2,7 @@ import argparse
 import os
 
 from dvc.cli import completion
+from dvc.cli.command import CmdBase
 from dvc.cli.utils import append_doc_link, fix_subparsers
 from dvc.commands.config import CmdConfig
 from dvc.ui import ui
@@ -36,6 +37,14 @@ class CmdCacheDir(CmdConfig):
         return 0
 
 
+class CmdCacheMigrate(CmdBase):
+    def run(self):
+        from dvc.cachemgr import migrate_2_to_3
+
+        migrate_2_to_3(self.repo, dry=self.args.dry)
+        return 0
+
+
 def add_parser(subparsers, parent_parser):
     from dvc.commands.config import parent_config_parser
 
@@ -54,8 +63,6 @@ def add_parser(subparsers, parent_parser):
         help="Use `dvc cache CMD --help` for command-specific help.",
     )
 
-    fix_subparsers(cache_subparsers)
-
     parent_cache_config_parser = argparse.ArgumentParser(
         add_help=False, parents=[parent_config_parser]
     )
@@ -86,3 +93,23 @@ def add_parser(subparsers, parent_parser):
         nargs="?",
     ).complete = completion.DIR
     cache_dir_parser.set_defaults(func=CmdCacheDir)
+
+    CACHE_MIGRATE_HELP = "Migrate cached files to the DVC 3.0 cache location."
+    cache_migrate_parser = cache_subparsers.add_parser(
+        "migrate",
+        parents=[parent_parser],
+        description=append_doc_link(CACHE_HELP, "cache/migrate"),
+        help=CACHE_MIGRATE_HELP,
+        formatter_class=argparse.RawDescriptionHelpFormatter,
+    )
+    cache_migrate_parser.add_argument(
+        "--dry",
+        help=(
+            "Only print actions which would be taken without actually migrating "
+            "any data."
+        ),
+        action="store_true",
+    )
+    cache_migrate_parser.set_defaults(func=CmdCacheMigrate)
+
+    fix_subparsers(cache_subparsers)

dvc/commands/check_ignore.py

@@ -39,7 +39,7 @@ class CmdCheckIgnore(CmdBase):
                 target = input()
             except (KeyboardInterrupt, EOFError):
                 break
-            if target == "":
+            if not target:
                 break
             if not self._check_one_file(target):
                 ret = 0

dvc/commands/completion.py

@@ -15,7 +15,7 @@ class CmdCompletion(CmdBaseNoRepo):
 
         shell = self.args.shell
         parser = self.args.parser
-        script = shtab.complete(parser, shell=shell, preamble=PREAMBLE)
+        script = shtab.complete(parser, shell=shell, preamble=PREAMBLE)  # nosec B604
         ui.write(script, force=True)
         return 0
 

dvc/commands/config.py

@@ -32,7 +32,7 @@ class CmdConfig(CmdBaseNoRepo):
 
         super().__init__(args)
 
-        self.config = Config(validate=False)
+        self.config = Config.from_cwd(validate=False)
 
     def run(self):
         if self.args.show_origin and (self.args.value or self.args.unset):

dvc/commands/dag.py

@@ -176,7 +176,6 @@ def add_parser(subparsers, parent_parser):
     )
     dag_parser.add_argument(
         "--md",
-        "--show-md",
         action="store_true",
         default=False,
         dest="markdown",

dvc/commands/data.py

@@ -1,14 +1,11 @@
 import argparse
 import logging
-from operator import itemgetter
-from typing import TYPE_CHECKING, Any, Dict, Iterable, Set
+from typing import TYPE_CHECKING
 
 from funcy import chunks, compact, log_durations
 
-from dvc.cli import completion
-from dvc.cli.actions import CommaSeparatedArgs
 from dvc.cli.command import CmdBase
-from dvc.cli.utils import append_doc_link, fix_subparsers, hide_subparsers_from_help
+from dvc.cli.utils import append_doc_link, fix_subparsers
 from dvc.ui import ui
 from dvc.utils import colorize
 
@@ -93,9 +90,7 @@ class CmdDataStatus(CmdBase):
                     ui.write(f"  ({hint})")
 
             if isinstance(stage_status, dict):
-                items = [
-                    ": ".join([state, file]) for file, state in stage_status.items()
-                ]
+                items = [f"{state}: {file}" for file, state in stage_status.items()]
             else:
                 items = stage_status
 
@@ -117,6 +112,7 @@ class CmdDataStatus(CmdBase):
             status = self.repo.data_status(
                 granular=self.args.granular,
                 untracked_files=self.args.untracked_files,
+                not_in_remote=self.args.not_in_remote,
                 remote_refresh=self.args.remote_refresh,
             )
 
@@ -131,63 +127,6 @@ class CmdDataStatus(CmdBase):
         return self._show_status(status)
 
 
-class CmdDataLs(CmdBase):
-    @staticmethod
-    def _show_table(
-        d: Iterable[Dict[str, Any]],
-        filter_types: Set[str],
-        filter_labels: Set[str],
-        markdown: bool = False,
-    ) -> None:
-        from rich.style import Style
-
-        from dvc.compare import TabularData
-
-        td = TabularData(
-            columns=["Path", "Type", "Labels", "Description"], fill_value="-"
-        )
-        for entry in sorted(d, key=itemgetter("path")):
-            typ = entry.get("type", "")
-            desc = entry.get("desc", "-")
-            labels = entry.get("labels", [])
-
-            if filter_types and typ not in filter_types:
-                continue
-            if filter_labels and filter_labels.isdisjoint(labels):
-                continue
-
-            rich_label = ui.rich_text()
-            for index, label in enumerate(labels):
-                if index:
-                    rich_label.append(",")
-                style = Style(bold=label in filter_labels, color="green")
-                rich_label.append(label, style=style)
-
-            if markdown and desc:
-                desc = desc.partition("\n")[0]
-
-            path = ui.rich_text(entry["path"], style="cyan")
-            type_style = Style(bold=typ in filter_types, color="yellow")
-            typ = ui.rich_text(entry.get("type", ""), style=type_style)
-            td.append([path, typ or "-", rich_label or "-", desc])
-
-        td.render(markdown=markdown, rich_table=True)
-
-    def run(self):
-        from dvc.repo.data import ls
-
-        filter_labels = set(self.args.labels)
-        filter_types = set(self.args.type)
-        d = ls(self.repo, targets=self.args.targets, recursive=self.args.recursive)
-        self._show_table(
-            d,
-            filter_labels=filter_labels,
-            filter_types=filter_types,
-            markdown=self.args.markdown,
-        )
-        return 0
-
-
 def add_parser(subparsers, parent_parser):
     data_parser = subparsers.add_parser(
         "data",
@@ -216,13 +155,6 @@ def add_parser(subparsers, parent_parser):
         default=False,
         help="Show output in JSON format.",
     )
-    data_status_parser.add_argument(
-        "--show-json",
-        action="store_true",
-        default=False,
-        dest="json",
-        help=argparse.SUPPRESS,
-    )
     data_status_parser.add_argument(
         "--granular",
         action="store_true",
@@ -244,57 +176,15 @@ def add_parser(subparsers, parent_parser):
         help="Show untracked files.",
     )
     data_status_parser.add_argument(
-        "--remote-refresh",
+        "--not-in-remote",
         action="store_true",
         default=False,
-        help="Refresh remote index.",
+        help="Show files not in remote.",
+    )
+    data_status_parser.add_argument(
+        "--no-remote-refresh",
+        dest="remote_refresh",
+        action="store_false",
+        help="Use cached remote index (don't check remote).",
     )
     data_status_parser.set_defaults(func=CmdDataStatus)
-
-    DATA_LS_HELP = "List data tracked by DVC with its metadata."
-    data_ls_parser = data_subparsers.add_parser(
-        "ls",
-        aliases=["list"],
-        parents=[parent_parser],
-        description=append_doc_link(DATA_LS_HELP, "data/ls"),
-        formatter_class=argparse.RawDescriptionHelpFormatter,
-        add_help=False,
-    )
-    data_ls_parser.add_argument(
-        "--md",
-        "--show-md",
-        dest="markdown",
-        action="store_true",
-        default=False,
-        help="Show tabulated output in the Markdown format (GFM).",
-    )
-    data_ls_parser.add_argument(
-        "--type",
-        action=CommaSeparatedArgs,
-        default=[],
-        help="Comma-separated list of type to filter.",
-    )
-    data_ls_parser.add_argument(
-        "--labels",
-        action=CommaSeparatedArgs,
-        default=[],
-        help="Comma-separated list of labels to filter.",
-    )
-    data_ls_parser.add_argument(
-        "-R",
-        "--recursive",
-        action="store_true",
-        default=False,
-        help="Recursively list from the specified directories.",
-    )
-    data_ls_parser.add_argument(
-        "targets",
-        default=None,
-        nargs="*",
-        help=(
-            "Limit command scope to these tracked files/directories, "
-            ".dvc files, or stage names."
-        ),
-    ).complete = completion.DVCFILES_AND_STAGE
-    data_ls_parser.set_defaults(func=CmdDataLs)
-    hide_subparsers_from_help(data_subparsers)

dvc/commands/data_sync.py

@@ -91,6 +91,8 @@ class CmdDataFetch(CmdDataBase):
                 with_deps=self.args.with_deps,
                 recursive=self.args.recursive,
                 run_cache=self.args.run_cache,
+                max_size=self.args.max_size,
+                types=self.args.types,
             )
             self.log_summary({"fetched": processed_files_count})
         except DvcException:
@@ -322,6 +324,22 @@ def add_parser(subparsers, _parent_parser):
         default=False,
         help="Fetch run history for all stages.",
     )
+    fetch_parser.add_argument(
+        "--max-size",
+        type=int,
+        help="Fetch data files/directories that are each below specified size (bytes).",
+    )
+    fetch_parser.add_argument(
+        "--type",
+        dest="types",
+        action="append",
+        default=[],
+        help=(
+            "Only fetch data files/directories that are of a particular "
+            "type (metrics, plots)."
+        ),
+        choices=["metrics", "plots"],
+    )
     fetch_parser.set_defaults(func=CmdDataFetch)
 
     # Status
@@ -403,7 +421,6 @@ def add_parser(subparsers, _parent_parser):
     )
     status_parser.add_argument(
         "--json",
-        "--show-json",
         action="store_true",
         default=False,
         help="Show status in JSON format.",

dvc/commands/destroy.py

@@ -21,7 +21,7 @@ class CmdDestroy(CmdBase):
             )
 
             if not self.args.force and not ui.confirm(statement):
-                raise DvcException(
+                raise DvcException(  # noqa: TRY301
                     "cannot destroy without a confirmation from the user."
                     " Use `-f` to force."
                 )

dvc/commands/diff.py

@@ -184,7 +184,6 @@ def add_parser(subparsers, parent_parser):
     )
     diff_parser.add_argument(
         "--json",
-        "--show-json",
         help="Format the output into a JSON",
         action="store_true",
         default=False,
@@ -197,7 +196,6 @@ def add_parser(subparsers, parent_parser):
     )
     diff_parser.add_argument(
         "--md",
-        "--show-md",
         help="Show tabulated output in the Markdown format (GFM).",
         action="store_true",
         dest="markdown",

dvc/commands/experiments/__init__.py

@@ -7,8 +7,6 @@ from dvc.commands.experiments import (
     clean,
     diff,
     exec_run,
-    gc,
-    init,
     ls,
     pull,
     push,
@@ -25,8 +23,6 @@ SUB_COMMANDS = [
     clean,
     diff,
     exec_run,
-    gc,
-    init,
     ls,
     pull,
     push,
@@ -82,6 +78,7 @@ def add_rev_selection_flags(
     experiments_subcmd_parser.add_argument(
         "--rev",
         type=str,
+        action="append",
         default=None,
         help=msg,
         metavar="<commit>",

dvc/commands/experiments/branch.py

@@ -26,5 +26,13 @@ def add_parser(experiments_subparsers, parent_parser):
     experiments_branch_parser.add_argument(
         "experiment", help="Experiment to be promoted."
     )
-    experiments_branch_parser.add_argument("branch", help="Name for the new Git branch")
+    experiments_branch_parser.add_argument(
+        "branch",
+        nargs="?",
+        default=None,
+        help=(
+            "Optional name for the new Git branch. "
+            "Defaults to '{experiment-name}-branch'."
+        ),
+    )
     experiments_branch_parser.set_defaults(func=CmdExperimentsBranch)

dvc/commands/experiments/diff.py

@@ -83,14 +83,12 @@ def add_parser(experiments_subparsers, parent_parser):
     )
     experiments_diff_parser.add_argument(
         "--json",
-        "--show-json",
         action="store_true",
         default=False,
         help="Show output in JSON format.",
     )
     experiments_diff_parser.add_argument(
         "--md",
-        "--show-md",
         action="store_true",
         default=False,
         dest="markdown",

dvc/commands/experiments/exec_run.py

@@ -19,6 +19,8 @@ class CmdExecutorRun(CmdBaseNoRepo):
             queue=None,
             log_level=logger.getEffectiveLevel(),
             infofile=self.args.infofile,
+            copy_paths=self.args.copy_paths,
+            message=self.args.message,
         )
         return 0
 
@@ -36,4 +38,21 @@ def add_parser(experiments_subparsers, parent_parser):
         help="Path to executor info file",
         default=None,
     )
+    exec_run_parser.add_argument(
+        "-C",
+        "--copy-paths",
+        action="append",
+        default=[],
+        help=(
+            "List of ignored or untracked paths to copy into the temp directory."
+            " Only used if `--temp` or `--queue` is specified."
+        ),
+    )
+    exec_run_parser.add_argument(
+        "-M",
+        "--message",
+        type=str,
+        default=None,
+        help="Custom commit message to use when committing the experiment.",
+    )
     exec_run_parser.set_defaults(func=CmdExecutorRun)

dvc/commands/experiments/gc.py

@@ -1,146 +0,0 @@
-import argparse
-import logging
-
-from dvc.cli.command import CmdBase
-from dvc.cli.utils import append_doc_link
-from dvc.exceptions import InvalidArgumentError
-from dvc.ui import ui
-
-logger = logging.getLogger(__name__)
-
-
-def _raise_error_if_all_disabled(**kwargs):
-    if not any(kwargs.values()):
-        raise InvalidArgumentError(
-            "Either of `-w|--workspace`, `-a|--all-branches`, `-T|--all-tags`,"
-            " `--all-commits` or `--date` needs to be set."
-        )
-
-
-class CmdExperimentsGC(CmdBase):
-    def run(self):
-        _raise_error_if_all_disabled(
-            all_branches=self.args.all_branches,
-            all_tags=self.args.all_tags,
-            all_commits=self.args.all_commits,
-            commit_date=self.args.commit_date,
-            workspace=self.args.workspace,
-        )
-
-        msg = "This will remove all experiments except those derived from "
-
-        msg += "the workspace"
-        if self.args.all_commits:
-            msg += " and all git commits"
-        else:
-            if self.args.all_branches and self.args.all_tags:
-                msg += " and all git branches and tags"
-            elif self.args.all_branches:
-                msg += " and all git branches"
-            elif self.args.all_tags:
-                msg += " and all git tags"
-
-            if self.args.commit_date:
-                msg += f" and all git commits before date {self.args.commit_date}"
-        msg += " of the current repo."
-
-        if self.args.queued:
-            msg += " Run queued experiments will be preserved."
-        else:
-            msg += " Run queued experiments will be removed."
-
-        logger.warning(msg)
-
-        msg = "Are you sure you want to proceed?"
-        if not self.args.force and not ui.confirm(msg):
-            return 1
-
-        removed = self.repo.experiments.gc(
-            all_branches=self.args.all_branches,
-            all_tags=self.args.all_tags,
-            all_commits=self.args.all_commits,
-            workspace=self.args.workspace,
-            commit_date=self.args.commit_date,
-            queued=self.args.queued,
-        )
-
-        if removed:
-            ui.write(
-                f"Removed {removed} experiments.",
-                "To remove unused cache files",
-                "use 'dvc gc'.",
-            )
-        else:
-            ui.write("No experiments to remove.")
-        return 0
-
-
-def add_parser(experiments_subparsers, parent_parser):
-    EXPERIMENTS_GC_HELP = "Garbage collect unneeded experiments."
-    EXPERIMENTS_GC_DESCRIPTION = (
-        "Removes all experiments which are not derived"
-        " from the specified Git revisions."
-    )
-    experiments_gc_parser = experiments_subparsers.add_parser(
-        "gc",
-        parents=[parent_parser],
-        description=append_doc_link(EXPERIMENTS_GC_DESCRIPTION, "exp/gc"),
-        help=EXPERIMENTS_GC_HELP,
-        formatter_class=argparse.RawDescriptionHelpFormatter,
-    )
-    experiments_gc_parser.add_argument(
-        "-w",
-        "--workspace",
-        action="store_true",
-        default=False,
-        help="Keep experiments derived from the current workspace.",
-    )
-    experiments_gc_parser.add_argument(
-        "-a",
-        "--all-branches",
-        action="store_true",
-        default=False,
-        help="Keep experiments derived from the tips of all Git branches.",
-    )
-    experiments_gc_parser.add_argument(
-        "-T",
-        "--all-tags",
-        action="store_true",
-        default=False,
-        help="Keep experiments derived from all Git tags.",
-    )
-    experiments_gc_parser.add_argument(
-        "-A",
-        "--all-commits",
-        action="store_true",
-        default=False,
-        help="Keep experiments derived from all Git commits.",
-    )
-    experiments_gc_parser.add_argument(
-        "--date",
-        type=str,
-        dest="commit_date",
-        metavar="<YYYY-MM-DD>",
-        default=None,
-        help=(
-            "Keep experiments from the commits after (inclusive) a certain "
-            "date. Date must match the extended ISO 8601 format (YYYY-MM-DD)."
-        ),
-    )
-    experiments_gc_parser.add_argument(
-        "--queued",
-        action="store_true",
-        default=False,
-        help=(
-            "Keep queued experiments (experiments run queue will be cleared "
-            "by default)."
-        ),
-    )
-    experiments_gc_parser.add_argument(
-        "-f",
-        "--force",
-        action="store_true",
-        default=False,
-        help="Force garbage collection - automatically agree to all prompts.",
-    )
-    experiments_gc_parser.set_defaults(func=CmdExperimentsGC)

dvc/commands/experiments/init.py

@@ -1,219 +0,0 @@
-import argparse
-import logging
-from typing import TYPE_CHECKING, List
-
-from funcy import compact
-
-from dvc.cli.command import CmdBase
-from dvc.cli.utils import append_doc_link
-from dvc.exceptions import InvalidArgumentError
-from dvc.ui import ui
-
-if TYPE_CHECKING:
-    from dvc.dependency import Dependency
-    from dvc.stage import PipelineStage
-
-
-logger = logging.getLogger(__name__)
-
-
-class CmdExperimentsInit(CmdBase):
-    DEFAULT_NAME = "train"
-    CODE = "src"
-    DATA = "data"
-    MODELS = "models"
-    DEFAULT_METRICS = "metrics.json"
-    DEFAULT_PARAMS = "params.yaml"
-    PLOTS = "plots"
-    DEFAULTS = {
-        "code": CODE,
-        "data": DATA,
-        "models": MODELS,
-        "metrics": DEFAULT_METRICS,
-        "params": DEFAULT_PARAMS,
-        "plots": PLOTS,
-    }
-
-    def run(self):
-        from dvc.commands.stage import parse_cmd
-
-        cmd = parse_cmd(self.args.command)
-        if not self.args.interactive and not cmd:
-            raise InvalidArgumentError("command is not specified")
-
-        from dvc.repo.experiments.init import init
-
-        defaults = {}
-        if not self.args.explicit:
-            config = self.repo.config["exp"]
-            defaults.update({**self.DEFAULTS, **config})
-
-        cli_args = compact(
-            {
-                "cmd": cmd,
-                "code": self.args.code,
-                "data": self.args.data,
-                "models": self.args.models,
-                "metrics": self.args.metrics,
-                "params": self.args.params,
-                "plots": self.args.plots,
-                "live": self.args.live,
-            }
-        )
-
-        initialized_stage, initialized_deps, initialized_out_dirs = init(
-            self.repo,
-            name=self.args.name,
-            type=self.args.type,
-            defaults=defaults,
-            overrides=cli_args,
-            interactive=self.args.interactive,
-            force=self.args.force,
-        )
-        self._post_init_display(
-            initialized_stage, initialized_deps, initialized_out_dirs
-        )
-        if self.args.run:
-            self.repo.experiments.run(targets=[initialized_stage.addressing])
-        return 0
-
-    def _post_init_display(
-        self,
-        stage: "PipelineStage",
-        new_deps: List["Dependency"],
-        new_out_dirs: List[str],
-    ) -> None:
-        from dvc.utils import humanize
-
-        path_fmt = "[green]{}[/green]".format
-        if new_deps:
-            deps_paths = humanize.join(map(path_fmt, new_deps))
-            ui.write(f"Creating dependencies: {deps_paths}", styled=True)
-
-        if new_out_dirs:
-            out_dirs_paths = humanize.join(map(path_fmt, new_out_dirs))
-            ui.write(f"Creating output directories: {out_dirs_paths}", styled=True)
-
-        ui.write(
-            f"Creating [b]{self.args.name}[/b] stage in [green]dvc.yaml[/]",
-            styled=True,
-        )
-        if stage.outs or not self.args.run:
-            # separate the above status-like messages with help/tips section
-            ui.write(styled=True)
-
-        if stage.outs:
-            outs_paths = humanize.join(map(path_fmt, stage.outs))
-            tips = f"Ensure your experiment command creates {outs_paths}."
-            ui.write(tips, styled=True)
-
-        if not self.args.run:
-            ui.write(
-                'You can now run your experiment using [b]"dvc exp run"[/].',
-                styled=True,
-            )
-        else:
-            # separate between `exp.run` output and `dvc exp init` output
-            ui.write(styled=True)
-
-
-def add_parser(experiments_subparsers, parent_parser):
-    EXPERIMENTS_INIT_HELP = "Quickly setup any project to use experiments."
-    experiments_init_parser = experiments_subparsers.add_parser(
-        "init",
-        parents=[parent_parser],
-        description=append_doc_link(EXPERIMENTS_INIT_HELP, "exp/init"),
-        formatter_class=argparse.RawDescriptionHelpFormatter,
-        help=EXPERIMENTS_INIT_HELP,
-    )
-    experiments_init_parser.add_argument(
-        "command",
-        nargs=argparse.REMAINDER,
-        help="Command to execute.",
-        metavar="command",
-    )
-    experiments_init_parser.add_argument(
-        "--run",
-        action="store_true",
-        help="Run the experiment after initializing it",
-    )
-    experiments_init_parser.add_argument(
-        "--interactive",
-        "-i",
-        action="store_true",
-        help="Prompt for values that are not provided",
-    )
-    experiments_init_parser.add_argument(
-        "-f",
-        "--force",
-        action="store_true",
-        default=False,
-        help="Overwrite existing stage",
-    )
-    experiments_init_parser.add_argument(
-        "--explicit",
-        action="store_true",
-        default=False,
-        help="Only use the path values explicitly provided",
-    )
-    experiments_init_parser.add_argument(
-        "--name",
-        "-n",
-        help="Name of the stage to create (default: %(default)s)",
-        default=CmdExperimentsInit.DEFAULT_NAME,
-    )
-    experiments_init_parser.add_argument(
-        "--code",
-        help=(
-            "Path to the source file or directory "
-            "which your experiments depend"
-            f" (default: {CmdExperimentsInit.CODE})"
-        ),
-    )
-    experiments_init_parser.add_argument(
-        "--data",
-        help=(
-            "Path to the data file or directory "
-            "which your experiments depend"
-            f" (default: {CmdExperimentsInit.DATA})"
-        ),
-    )
-    experiments_init_parser.add_argument(
-        "--models",
-        help=(
-            "Path to the model file or directory for your experiments"
-            f" (default: {CmdExperimentsInit.MODELS})"
-        ),
-    )
-    experiments_init_parser.add_argument(
-        "--params",
-        help=(
-            "Path to the parameters file for your experiments"
-            f" (default: {CmdExperimentsInit.DEFAULT_PARAMS})"
-        ),
-    )
-    experiments_init_parser.add_argument(
-        "--metrics",
-        help=(
-            "Path to the metrics file for your experiments"
-            f" (default: {CmdExperimentsInit.DEFAULT_METRICS})"
-        ),
-    )
-    experiments_init_parser.add_argument(
-        "--plots",
-        help=(
-            "Path to the plots file or directory for your experiments"
-            f" (default: {CmdExperimentsInit.PLOTS})"
-        ),
-    )
-    experiments_init_parser.add_argument(
-        "--live",
-        help="Path to log dvclive outputs for your experiments",
-    )
-    experiments_init_parser.add_argument(
-        "--type",
-        choices=["default", "checkpoint"],
-        default="default",
-        help="Select type of stage to create (default: %(default)s)",
-    )
-    experiments_init_parser.set_defaults(func=CmdExperimentsInit)

dvc/commands/experiments/ls.py

@@ -3,6 +3,7 @@ import logging
 
 from dvc.cli.command import CmdBase
 from dvc.cli.utils import append_doc_link
+from dvc.exceptions import InvalidArgumentError
 from dvc.ui import ui
 
 logger = logging.getLogger(__name__)
@@ -11,19 +12,36 @@ logger = logging.getLogger(__name__)
 class CmdExperimentsList(CmdBase):
     def run(self):
         name_only = self.args.name_only
+        sha_only = self.args.sha_only
+        git_remote = self.args.git_remote
+        if sha_only and git_remote:
+            raise InvalidArgumentError("--sha-only not supported with git_remote.")
         exps = self.repo.experiments.ls(
             all_commits=self.args.all_commits,
             rev=self.args.rev,
             num=self.args.num,
-            git_remote=self.args.git_remote,
+            git_remote=git_remote,
         )
 
         for baseline in exps:
-            if not name_only:
-                ui.write(f"{baseline}:")
-            for exp_name in exps[baseline]:
-                indent = "" if name_only else "\t"
-                ui.write(f"{indent}{exp_name}")
+            if not (name_only or sha_only):
+                tag_base = "refs/tags/"
+                branch_base = "refs/heads/"
+                name = baseline[:7]
+                if baseline.startswith(tag_base):
+                    name = baseline[len(tag_base) :]
+                elif baseline.startswith(branch_base):
+                    name = baseline[len(branch_base) :]
+                ui.write(f"{name}:")
+            for exp_name, rev in exps[baseline]:
+                if name_only:
+                    ui.write(exp_name)
+                elif sha_only:
+                    ui.write(rev)
+                elif rev:
+                    ui.write(f"\t{rev[:7]} [{exp_name}]")
+                else:
+                    ui.write(f"\t{exp_name}")
 
         return 0
 
@@ -40,11 +58,18 @@ def add_parser(experiments_subparsers, parent_parser):
         formatter_class=argparse.RawDescriptionHelpFormatter,
     )
     add_rev_selection_flags(experiments_list_parser, "List")
-    experiments_list_parser.add_argument(
+    display_group = experiments_list_parser.add_mutually_exclusive_group()
+    display_group.add_argument(
         "--name-only",
         "--names-only",
         action="store_true",
-        help="Only output experiment names (without parent commits).",
+        help="Only output experiment names (without SHAs or parent commits).",
+    )
+    display_group.add_argument(
+        "--sha-only",
+        "--shas-only",
+        action="store_true",
+        help="Only output experiment commit SHAs (without names or parent commits).",
     )
     experiments_list_parser.add_argument(
         "git_remote",

dvc/commands/experiments/pull.py

@@ -3,23 +3,13 @@ import logging
 
 from dvc.cli.command import CmdBase
 from dvc.cli.utils import append_doc_link
-from dvc.exceptions import InvalidArgumentError
 from dvc.ui import ui
 
 logger = logging.getLogger(__name__)
 
 
 class CmdExperimentsPull(CmdBase):
-    def raise_error_if_all_disabled(self):
-        if not any([self.args.experiment, self.args.all_commits, self.args.rev]):
-            raise InvalidArgumentError(
-                "Either provide an `experiment` argument, or use the "
-                "`--rev` or `--all-commits` flag."
-            )
-
     def run(self):
-        self.raise_error_if_all_disabled()
-
         pulled_exps = self.repo.experiments.pull(
             self.args.git_remote,
             self.args.experiment,
@@ -61,7 +51,7 @@ def add_parser(experiments_subparsers, parent_parser):
         help=EXPERIMENTS_PULL_HELP,
         formatter_class=argparse.RawDescriptionHelpFormatter,
     )
-    add_rev_selection_flags(experiments_pull_parser, "Pull", False)
+    add_rev_selection_flags(experiments_pull_parser, "Pull", True)
     experiments_pull_parser.add_argument(
         "-f",
         "--force",

dvc/commands/experiments/push.py

@@ -1,46 +1,74 @@
 import argparse
 import logging
+from typing import Any, Dict
 
 from dvc.cli import completion
 from dvc.cli.command import CmdBase
 from dvc.cli.utils import append_doc_link
-from dvc.exceptions import InvalidArgumentError
 from dvc.ui import ui
 
 logger = logging.getLogger(__name__)
 
 
 class CmdExperimentsPush(CmdBase):
-    def raise_error_if_all_disabled(self):
-        if not any([self.args.experiment, self.args.all_commits, self.args.rev]):
-            raise InvalidArgumentError(
-                "Either provide an `experiment` argument, or use the "
-                "`--rev` or `--all-commits` flag."
+    @staticmethod
+    def log_result(result: Dict[str, Any], remote: str):
+        from dvc.utils import humanize
+
+        def join_exps(exps):
+            return humanize.join([f"[bold]{e}[/]" for e in exps])
+
+        if diverged_exps := result.get("diverged"):
+            exps = join_exps(diverged_exps)
+            ui.error_write(
+                f"[yellow]Local experiment {exps} has diverged "
+                "from remote experiment with the same name.\n"
+                "To override the remote experiment re-run with '--force'.",
+                styled=True,
+            )
+        if uptodate_exps := result.get("up_to_date"):
+            exps = join_exps(uptodate_exps)
+            verb = "are" if len(uptodate_exps) > 1 else "is"
+            ui.write(
+                f"Experiment {exps} {verb} up to date on Git remote {remote!r}.",
+                styled=True,
+            )
+        if pushed_exps := result.get("success"):
+            exps = join_exps(pushed_exps)
+            ui.write(f"Pushed experiment {exps} to Git remote {remote!r}.", styled=True)
+        if not uptodate_exps and not pushed_exps:
+            ui.write("No experiments to push.")
+
+        if uploaded := result.get("uploaded"):
+            stats = {"uploaded": uploaded}
+            ui.write(humanize.get_summary(stats.items()))
+
+        if project_url := result.get("url"):
+            ui.rich_print(
+                "View your experiments at", project_url, style="yellow", soft_wrap=True
             )
 
     def run(self):
-        self.raise_error_if_all_disabled()
+        from dvc.repo.experiments.push import UploadError
 
-        pushed_exps = self.repo.experiments.push(
-            self.args.git_remote,
-            self.args.experiment,
-            all_commits=self.args.all_commits,
-            rev=self.args.rev,
-            num=self.args.num,
-            force=self.args.force,
-            push_cache=self.args.push_cache,
-            dvc_remote=self.args.dvc_remote,
-            jobs=self.args.jobs,
-            run_cache=self.args.run_cache,
-        )
-
-        if pushed_exps:
-            ui.write(
-                f"Pushed experiment '{pushed_exps}'"
-                f"to Git remote '{self.args.git_remote}'."
+        try:
+            result = self.repo.experiments.push(
+                self.args.git_remote,
+                self.args.experiment,
+                all_commits=self.args.all_commits,
+                rev=self.args.rev,
+                num=self.args.num,
+                force=self.args.force,
+                push_cache=self.args.push_cache,
+                dvc_remote=self.args.dvc_remote,
+                jobs=self.args.jobs,
+                run_cache=self.args.run_cache,
             )
-        else:
-            ui.write("No experiments to push.")
+        except UploadError as e:
+            self.log_result(e.result, self.args.git_remote)
+            raise
+
+        self.log_result(result, self.args.git_remote)
         if not self.args.push_cache:
             ui.write(
                 "To push cached outputs",
@@ -64,7 +92,7 @@ def add_parser(experiments_subparsers, parent_parser):
         help=EXPERIMENTS_PUSH_HELP,
         formatter_class=argparse.RawDescriptionHelpFormatter,
     )
-    add_rev_selection_flags(experiments_push_parser, "Push", False)
+    add_rev_selection_flags(experiments_push_parser, "Push", True)
     experiments_push_parser.add_argument(
         "-f",
         "--force",

dvc/commands/experiments/remove.py

@@ -24,9 +24,11 @@ class CmdExperimentsRemove(CmdBase):
             )
 
     def run(self):
+        from dvc.utils import humanize
+
         self.check_arguments()
 
-        removed_list = self.repo.experiments.remove(
+        removed = self.repo.experiments.remove(
             exp_names=self.args.experiment,
             all_commits=self.args.all_commits,
             rev=self.args.rev,
@@ -34,8 +36,10 @@ class CmdExperimentsRemove(CmdBase):
             queue=self.args.queue,
             git_remote=self.args.git_remote,
         )
-        removed = ",".join(removed_list)
-        ui.write(f"Removed experiments: {removed}")
+        if removed:
+            ui.write(f"Removed experiments: {humanize.join(map(repr, removed))}")
+        else:
+            ui.write("No experiments to remove.")
 
         return 0
 

dvc/commands/experiments/run.py

@@ -1,49 +1,28 @@
 import argparse
 import logging
 
-from dvc.cli import completion
 from dvc.cli.utils import append_doc_link
 from dvc.commands.repro import CmdRepro
 from dvc.commands.repro import add_arguments as add_repro_arguments
-from dvc.exceptions import InvalidArgumentError
-from dvc.ui import ui
 
 logger = logging.getLogger(__name__)
 
 
 class CmdExperimentsRun(CmdRepro):
     def run(self):
-        from dvc.compare import show_metrics
-
-        if self.args.checkpoint_resume:
-            if self.args.reset:
-                raise InvalidArgumentError("--reset and --rev are mutually exclusive.")
-            if not (self.args.queue or self.args.tmp_dir):
-                raise InvalidArgumentError(
-                    "--rev can only be used in conjunction with --queue or --temp."
-                )
-
-        if self.args.reset:
-            ui.write("Any existing checkpoints will be reset and re-run.")
-
-        results = self.repo.experiments.run(
+        self.repo.experiments.run(
             name=self.args.name,
             queue=self.args.queue,
             run_all=self.args.run_all,
             jobs=self.args.jobs,
             params=self.args.set_param,
-            checkpoint_resume=self.args.checkpoint_resume,
-            reset=self.args.reset,
             tmp_dir=self.args.tmp_dir,
             machine=self.args.machine,
+            copy_paths=self.args.copy_paths,
+            message=self.args.message,
             **self._common_kwargs,
         )
 
-        if self.args.metrics and results:
-            metrics = self.repo.metrics.show(revs=list(results))
-            metrics.pop("workspace", None)
-            show_metrics(metrics)
-
         return 0
 
 
@@ -57,22 +36,6 @@ def add_parser(experiments_subparsers, parent_parser):
         formatter_class=argparse.RawDescriptionHelpFormatter,
     )
     _add_run_common(experiments_run_parser)
-    experiments_run_parser.add_argument(
-        "-r",
-        "--rev",
-        type=str,
-        dest="checkpoint_resume",
-        help=(
-            "Continue the specified checkpoint experiment. Can only be used "
-            "in conjunction with --queue or --temp."
-        ),
-        metavar="<experiment_rev>",
-    ).complete = completion.EXPERIMENT
-    experiments_run_parser.add_argument(
-        "--reset",
-        action="store_true",
-        help="Reset existing checkpoints and restart the experiment.",
-    )
     experiments_run_parser.set_defaults(func=CmdExperimentsRun)
 
 
@@ -136,3 +99,20 @@ def _add_run_common(parser):
         # )
         # metavar="<name>",
     )
+    parser.add_argument(
+        "-C",
+        "--copy-paths",
+        action="append",
+        default=[],
+        help=(
+            "List of ignored or untracked paths to copy into the temp directory."
+            " Only used if `--temp` or `--queue` is specified."
+        ),
+    )
+    parser.add_argument(
+        "-m",
+        "--message",
+        type=str,
+        default=None,
+        help="Custom commit message to use when committing the experiment.",
+    )

dvc/commands/experiments/save.py

@@ -16,6 +16,7 @@ class CmdExperimentsSave(CmdBase):
                 name=self.args.name,
                 force=self.args.force,
                 include_untracked=self.args.include_untracked,
+                message=self.args.message,
             )
         except DvcException:
             logger.exception("failed to save experiment")
@@ -52,7 +53,6 @@ def add_parser(experiments_subparsers, parent_parser):
     )
     save_parser.add_argument(
         "--json",
-        "--show-json",
         action="store_true",
         default=False,
         help="Show output in JSON format.",
@@ -75,4 +75,11 @@ def add_parser(experiments_subparsers, parent_parser):
         help="List of untracked paths to include in the experiment.",
         metavar="<path>",
     )
+    save_parser.add_argument(
+        "-M",
+        "--message",
+        type=str,
+        default=None,
+        help="Custom commit message to use when committing the experiment.",
+    )
     save_parser.set_defaults(func=CmdExperimentsSave)

dvc/commands/experiments/show.py

@@ -1,20 +1,16 @@
 import argparse
 import logging
-import os
 import re
-from collections import Counter, OrderedDict, defaultdict
 from datetime import date, datetime
-from typing import TYPE_CHECKING, Any, Dict, Set
+from typing import TYPE_CHECKING, Dict, Iterable
 
 from funcy import lmap
 
-from dvc.cli import completion
 from dvc.cli.command import CmdBase
 from dvc.cli.utils import append_doc_link
 from dvc.commands.metrics import DEFAULT_PRECISION
-from dvc.exceptions import DvcException, InvalidArgumentError
+from dvc.exceptions import DvcException
 from dvc.ui import ui
-from dvc.utils.flatten import flatten
 from dvc.utils.serialize import encode_exception
 
 if TYPE_CHECKING:
@@ -28,263 +24,13 @@ FILL_VALUE_ERRORED = "!"
 logger = logging.getLogger(__name__)
 
 
-def _update_names(names, items):
-    for name, item in items:
-        item = item.get("data", {})
-        if isinstance(item, dict):
-            item = flatten(item)
-            names[name].update({key: None for key in item})
-
-
-def _collect_names(all_experiments, **kwargs):
-    metric_names: Dict[str, Dict[str, Any]] = defaultdict(dict)
-    param_names: Dict[str, Dict[str, Any]] = defaultdict(dict)
-    deps_names: Set[str] = set()
-
-    for _, experiments in all_experiments.items():
-        for exp_data in experiments.values():
-            exp = exp_data.get("data", {})
-            _update_names(metric_names, exp.get("metrics", {}).items())
-            _update_names(param_names, exp.get("params", {}).items())
-            for dep_name in exp.get("deps", {}):
-                deps_names.add(dep_name)
-
-    return metric_names, param_names, sorted(deps_names)
-
-
 experiment_types = {
-    "checkpoint_tip": "│ ╓",
-    "checkpoint_commit": "│ ╟",
-    "checkpoint_base": "├─╨",
     "branch_commit": "├──",
     "branch_base": "└──",
     "baseline": "",
 }
 
 
-def _collect_rows(  # noqa: C901, PLR0912, PLR0913, PLR0915
-    base_rev,
-    experiments,
-    all_headers,
-    metric_headers,
-    param_headers,
-    metric_names,
-    param_names,
-    deps_names,
-    precision=DEFAULT_PRECISION,
-    sort_by=None,
-    sort_order=None,
-    fill_value=FILL_VALUE,
-    iso=False,
-):
-    from dvc.scm import Git
-
-    if sort_by:
-        sort_path, sort_name, sort_type = _sort_column(
-            sort_by, metric_names, param_names
-        )
-        reverse = sort_order == "desc"
-        experiments = _sort_exp(experiments, sort_path, sort_name, sort_type, reverse)
-
-    new_checkpoint = True
-    for i, (rev, results) in enumerate(experiments.items()):
-        fill_value = FILL_VALUE_ERRORED if results.get("error") else fill_value
-        row_dict = {k: fill_value for k in all_headers}
-
-        exp = results.get("data", {})
-
-        state = exp.get("status")
-        if state == "Success":
-            state = fill_value
-
-        is_baseline = rev == "baseline"
-
-        if is_baseline:
-            name_rev = base_rev[:7] if Git.is_sha(base_rev) else base_rev
-        else:
-            name_rev = rev[:7]
-
-        tip = exp.get("checkpoint_tip")
-        parent_rev = exp.get("checkpoint_parent", "")
-        parent_exp = experiments.get(parent_rev, {}).get("data", {})
-        parent_tip = parent_exp.get("checkpoint_tip")
-
-        parent = ""
-        if is_baseline:
-            typ = "baseline"
-        elif tip:
-            if tip == parent_tip:
-                typ = "checkpoint_tip" if new_checkpoint else "checkpoint_commit"
-            elif parent_rev == base_rev:
-                typ = "checkpoint_base"
-            else:
-                typ = "checkpoint_commit"
-                parent = parent_rev[:7]
-        elif i < len(experiments) - 1:
-            typ = "branch_commit"
-        else:
-            typ = "branch_base"
-
-        if not is_baseline:
-            new_checkpoint = not (tip and tip == parent_tip)
-
-        row_dict["Experiment"] = exp.get("name", "")
-        row_dict["rev"] = name_rev
-        row_dict["typ"] = typ
-        row_dict["Created"] = format_time(exp.get("timestamp"), fill_value, iso)
-        row_dict["parent"] = parent
-        row_dict["State"] = state
-        row_dict["Executor"] = exp.get("executor", fill_value)
-
-        _extend_row(
-            row_dict,
-            metric_names,
-            metric_headers,
-            exp.get("metrics", {}).items(),
-            precision,
-            fill_value=fill_value,
-        )
-        _extend_row(
-            row_dict,
-            param_names,
-            param_headers,
-            exp.get("params", {}).items(),
-            precision,
-            fill_value=fill_value,
-        )
-        for dep in deps_names:
-            hash_info = exp.get("deps", {}).get(dep, {}).get("hash")
-            if hash_info is not None:
-                hash_info = hash_info[:7]
-            row_dict[dep] = hash_info
-        yield list(row_dict.values())
-
-
-def _sort_column(sort_by, metric_names, param_names):
-    path, _, sort_name = sort_by.rpartition(":")
-    matches = set()
-
-    if path:
-        if path in metric_names and sort_name in metric_names[path]:
-            matches.add((path, sort_name, "metrics"))
-        if path in param_names and sort_name in param_names[path]:
-            matches.add((path, sort_name, "params"))
-    else:
-        for path in metric_names:
-            if sort_name in metric_names[path]:
-                matches.add((path, sort_name, "metrics"))
-        for path in param_names:
-            if sort_name in param_names[path]:
-                matches.add((path, sort_name, "params"))
-
-    if len(matches) == 1:
-        return matches.pop()
-    if len(matches) > 1:
-        raise InvalidArgumentError(
-            "Ambiguous sort column '{}' matched '{}'".format(
-                sort_by,
-                ", ".join([f"{path}:{name}" for path, name, _ in matches]),
-            )
-        )
-    raise InvalidArgumentError(f"Unknown sort column '{sort_by}'")
-
-
-def _sort_exp(experiments, sort_path, sort_name, typ, reverse):
-    def _sort(item):
-        rev, exp = item
-        exp_data = exp.get("data", {})
-        tip = exp_data.get("checkpoint_tip")
-        if tip and tip != rev:
-            # Sort checkpoint experiments by tip commit
-            return _sort((tip, experiments[tip]))
-        data = exp_data.get(typ, {}).get(sort_path, {}).get("data", {})
-        val = flatten(data).get(sort_name)
-        return val is None, val
-
-    ret = OrderedDict()
-    if "baseline" in experiments:
-        ret["baseline"] = experiments.pop("baseline")
-
-    ret.update(sorted(experiments.items(), key=_sort, reverse=reverse))
-    return ret
-
-
-def format_time(datetime_obj, fill_value=FILL_VALUE, iso=False):
-    if datetime_obj is None:
-        return fill_value
-
-    if iso:
-        return datetime_obj.isoformat()
-
-    if datetime_obj.date() == date.today():
-        fmt = "%I:%M %p"
-    else:
-        fmt = "%b %d, %Y"
-    return datetime_obj.strftime(fmt)
-
-
-def _extend_row(row, names, headers, items, precision, fill_value=FILL_VALUE):
-    from dvc.compare import _format_field, with_value
-
-    for fname, data in items:
-        item = data.get("data", {})
-        item = flatten(item) if isinstance(item, dict) else {fname: item}
-        for name in names[fname]:
-            value = with_value(
-                item.get(name),
-                FILL_VALUE_ERRORED if data.get("error", None) else fill_value,
-            )
-            # wrap field data in ui.rich_text, otherwise rich may
-            # interpret unescaped braces from list/dict types as rich
-            # markup tags
-            value = ui.rich_text(str(_format_field(value, precision)))
-            if name in headers:
-                row[name] = value
-            else:
-                row[f"{fname}:{name}"] = value
-
-
-def experiments_table(  # noqa: PLR0913
-    all_experiments,
-    headers,
-    metric_headers,
-    metric_names,
-    param_headers,
-    param_names,
-    deps_names,
-    sort_by=None,
-    sort_order=None,
-    precision=DEFAULT_PRECISION,
-    fill_value=FILL_VALUE,
-    iso=False,
-) -> "TabularData":
-    from funcy import lconcat
-
-    from dvc.compare import TabularData
-
-    all_headers = lconcat(headers, metric_headers, param_headers, deps_names)
-    td = TabularData(all_headers, fill_value=fill_value)
-    for base_rev, experiments in all_experiments.items():
-        rows = _collect_rows(
-            base_rev,
-            experiments,
-            all_headers,
-            metric_headers,
-            param_headers,
-            metric_names,
-            param_names,
-            deps_names,
-            sort_by=sort_by,
-            sort_order=sort_order,
-            precision=precision,
-            fill_value=fill_value,
-            iso=iso,
-        )
-        td.extend(rows)
-
-    return td
-
-
 def prepare_exp_id(kwargs) -> "RichText":
     exp_name = kwargs["Experiment"]
     rev = kwargs["rev"]
@@ -308,50 +54,16 @@ def baseline_styler(typ):
     return {"style": "bold"} if typ == "baseline" else {}
 
 
-def show_experiments(  # noqa: C901, PLR0912
-    all_experiments,
+def show_experiments(  # noqa: C901
+    td: "TabularData",
+    headers: Dict[str, Iterable[str]],
     keep=None,
     drop=None,
     pager=True,
     csv=False,
     markdown=False,
-    pcp=False,
     **kwargs,
 ):
-    from funcy.seqs import flatten as flatten_list
-
-    metric_names, param_names, deps_names = _collect_names(all_experiments)
-
-    headers_list = [
-        "Experiment",
-        "rev",
-        "typ",
-        "Created",
-        "parent",
-        "State",
-        "Executor",
-    ]
-
-    names = {**metric_names, **param_names}
-    counter = Counter(flatten_list([list(a.keys()) for a in names.values()]))
-    counter.update(headers_list)
-    metric_headers = _normalize_headers(metric_names, counter)
-    param_headers = _normalize_headers(param_names, counter)
-
-    td = experiments_table(
-        all_experiments,
-        headers_list,
-        metric_headers,
-        metric_names,
-        param_headers,
-        param_names,
-        deps_names,
-        kwargs.get("sort_by"),
-        kwargs.get("sort_order"),
-        kwargs.get("precision"),
-        kwargs.get("fill_value"),
-        kwargs.get("iso"),
-    )
     if keep:
         for col in td.keys():  # noqa: SIM118
             if re.match(keep, col):
@@ -368,11 +80,6 @@ def show_experiments(  # noqa: C901, PLR0912
         td.column("Experiment")[:] = map(prepare_exp_id, td.as_dict(merge_headers))
         td.drop(*merge_headers[1:])
 
-    headers = {
-        "metrics": metric_headers,
-        "params": param_headers,
-        "deps": deps_names,
-    }
     styles = {
         "Experiment": {"no_wrap": True, "header_style": "black on grey93"},
         "Created": {"header_style": "black on grey93"},
@@ -397,51 +104,23 @@ def show_experiments(  # noqa: C901, PLR0912
         }
     )
 
-    if kwargs.get("only_changed", False) or pcp:
+    if kwargs.get("only_changed", False):
         td.drop_duplicates("cols", ignore_empty=False)
 
     cols_to_drop = set()
     if drop is not None:
         cols_to_drop = {col for col in td.keys() if re.match(drop, col)}  # noqa: SIM118
-    if pcp:
-        cols_to_drop.add("Created")
     td.drop(*cols_to_drop)
 
-    if pcp:
-        subset = {x for x in td.keys() if x != "Experiment"}  # noqa: SIM118
-        td.dropna(
-            "rows",
-            how="all",
-            subset=subset,
-        )
-        td.drop_duplicates("rows", subset=subset)
-        if "Experiment" in td:
-            td.column("Experiment")[:] = [
-                # remove tree characters
-                str(x).encode("ascii", "ignore").strip().decode()
-                for x in td.column("Experiment")
-            ]
-        out = kwargs.get("out") or "dvc_plots"
-        output_file = os.path.join(out, "index.html")
-        ui.write(
-            td.to_parallel_coordinates(
-                output_path=os.path.abspath(output_file),
-                color_by=kwargs.get("sort_by") or "Experiment",
-            )
-        )
-        if kwargs.get("open"):
-            return ui.open_browser(output_file)
-
-    else:
-        td.render(
-            pager=pager,
-            borders="horizontals",
-            rich_table=True,
-            header_styles=styles,
-            row_styles=row_styles,
-            csv=csv,
-            markdown=markdown,
-        )
+    td.render(
+        pager=pager,
+        borders="horizontals",
+        rich_table=True,
+        header_styles=styles,
+        row_styles=row_styles,
+        csv=csv,
+        markdown=markdown,
+    )
 
 
 def _normalize_headers(names, count):
@@ -453,19 +132,17 @@ def _normalize_headers(names, count):
 
 
 def _format_json(item):
-    from dvc.repo.experiments.show import _CachedError
-
     if isinstance(item, (date, datetime)):
         return item.isoformat()
-    if isinstance(item, _CachedError):
-        return {"type": getattr(item, "typ", "_CachedError"), "msg": str(item)}
     return encode_exception(item)
 
 
 class CmdExperimentsShow(CmdBase):
     def run(self):
+        from dvc.repo.experiments.show import tabulate
+
         try:
-            all_experiments = self.repo.experiments.show(
+            exps = self.repo.experiments.show(
                 all_branches=self.args.all_branches,
                 all_tags=self.args.all_tags,
                 all_commits=self.args.all_commits,
@@ -483,30 +160,33 @@ class CmdExperimentsShow(CmdBase):
             return 1
 
         if self.args.json:
-            ui.write_json(all_experiments, default=_format_json)
+            ui.write_json([exp.dumpd() for exp in exps], default=_format_json)
         else:
             precision = (
                 self.args.precision or None if self.args.csv else DEFAULT_PRECISION
             )
             fill_value = "" if self.args.csv else FILL_VALUE
             iso = self.args.csv
+            td, headers = tabulate(
+                exps,
+                precision=precision,
+                fill_value=fill_value,
+                iso=iso,
+                sort_by=self.args.sort_by,
+                sort_order=self.args.sort_order,
+            )
 
             show_experiments(
-                all_experiments,
+                td,
+                headers,
                 keep=self.args.keep,
                 drop=self.args.drop,
                 sort_by=self.args.sort_by,
                 sort_order=self.args.sort_order,
-                precision=precision,
-                fill_value=fill_value,
-                iso=iso,
                 pager=not self.args.no_pager,
                 csv=self.args.csv,
                 markdown=self.args.markdown,
                 only_changed=self.args.only_changed,
-                pcp=self.args.pcp,
-                out=self.args.out,
-                open=self.args.open,
             )
         return 0
 
@@ -599,21 +279,18 @@ def add_parser(experiments_subparsers, parent_parser):
     )
     experiments_show_parser.add_argument(
         "--json",
-        "--show-json",
         action="store_true",
         default=False,
         help="Print output in JSON format instead of a human-readable table.",
     )
     experiments_show_parser.add_argument(
         "--csv",
-        "--show-csv",
         action="store_true",
         default=False,
         help="Print output in csv format instead of a human-readable table.",
     )
     experiments_show_parser.add_argument(
         "--md",
-        "--show-md",
         action="store_true",
         default=False,
         dest="markdown",
@@ -628,27 +305,6 @@ def add_parser(experiments_subparsers, parent_parser):
         ),
         metavar="<n>",
     )
-    experiments_show_parser.add_argument(
-        "--parallel-coordinates-plot",
-        "--pcp",
-        dest="pcp",
-        action="store_true",
-        default=False,
-        help="Generate a Parallel Coordinates Plot from the tabulated output.",
-    )
-    experiments_show_parser.add_argument(
-        "-o",
-        "--out",
-        default=None,
-        help="Destination folder to save the Parallel Coordinates Plot to",
-        metavar="<path>",
-    ).complete = completion.DIR
-    experiments_show_parser.add_argument(
-        "--open",
-        action="store_true",
-        default=False,
-        help="Open the Parallel Coordinates Plot directly in the browser.",
-    )
     experiments_show_parser.add_argument(
         "--no-fetch",
         dest="fetch_running",

dvc/commands/gc.py

@@ -10,7 +10,7 @@ logger = logging.getLogger(__name__)
 
 
 class CmdGC(CmdBase):
-    def run(self):  # noqa: C901
+    def run(self):  # noqa: C901, PLR0912
         from dvc.repo.gc import _validate_args
 
         _validate_args(
@@ -22,6 +22,8 @@ class CmdGC(CmdBase):
             workspace=self.args.workspace,
             rev=self.args.rev,
             num=self.args.num,
+            cloud=self.args.cloud,
+            not_in_remote=self.args.not_in_remote,
         )
 
         if self.args.rev:
@@ -46,6 +48,10 @@ class CmdGC(CmdBase):
 
         if self.args.all_experiments:
             msg += " and all experiments"
+
+        if self.args.not_in_remote:
+            msg += " that are present in the DVC remote"
+
         if self.args.repos:
             msg += " of the current and the following repos:"
 
@@ -74,6 +80,7 @@ class CmdGC(CmdBase):
             workspace=self.args.workspace,
             rev=self.args.rev,
             num=self.args.num,
+            not_in_remote=self.args.not_in_remote,
         )
         return 0
 
@@ -157,12 +164,18 @@ def add_parser(subparsers, parent_parser):
         default=False,
         help="Keep data files for all experiments.",
     )
+    gc_parser.add_argument(
+        "--not-in-remote",
+        action="store_true",
+        default=False,
+        help="Keep data files that are not present in the remote.",
+    )
     gc_parser.add_argument(
         "-c",
         "--cloud",
         action="store_true",
         default=False,
-        help="Collect garbage in remote repository.",
+        help="Collect garbage in remote storage in addition to local cache.",
     )
     gc_parser.add_argument(
         "-r",

dvc/commands/get.py

@@ -14,12 +14,8 @@ class CmdGet(CmdBaseNoRepo):
         from dvc.api import get_url
         from dvc.ui import ui
 
-        try:
-            url = get_url(self.args.path, repo=self.args.url, rev=self.args.rev)
-            ui.write(url, force=True)
-        except DvcException:
-            logger.exception("failed to show URL")
-            return 1
+        url = get_url(self.args.path, repo=self.args.url, rev=self.args.rev)
+        ui.write(url, force=True)
 
         return 0
 
@@ -40,6 +36,8 @@ class CmdGet(CmdBaseNoRepo):
                 out=self.args.out,
                 rev=self.args.rev,
                 jobs=self.args.jobs,
+                force=self.args.force,
+                config=self.args.config,
             )
             return 0
         except CloneError:
@@ -98,4 +96,19 @@ def add_parser(subparsers, parent_parser):
         ),
         metavar="<number>",
     )
+    get_parser.add_argument(
+        "-f",
+        "--force",
+        action="store_true",
+        default=False,
+        help="Override local file or folder if exists.",
+    )
+    get_parser.add_argument(
+        "--config",
+        type=str,
+        help=(
+            "Path to a config file that will be merged with the config "
+            "in the target repository."
+        ),
+    )
     get_parser.set_defaults(func=CmdGet)

dvc/commands/get_url.py

@@ -14,7 +14,12 @@ class CmdGetUrl(CmdBaseNoRepo):
         from dvc.repo import Repo
 
         try:
-            Repo.get_url(self.args.url, out=self.args.out, jobs=self.args.jobs)
+            Repo.get_url(
+                self.args.url,
+                out=self.args.out,
+                jobs=self.args.jobs,
+                force=self.args.force,
+            )
             return 0
         except DvcException:
             logger.exception("failed to get '%s'", self.args.url)
@@ -46,4 +51,11 @@ def add_parser(subparsers, parent_parser):
         ),
         metavar="<number>",
     )
+    get_parser.add_argument(
+        "-f",
+        "--force",
+        action="store_true",
+        default=False,
+        help="Override local file or folder if exists.",
+    )
     get_parser.set_defaults(func=CmdGetUrl)

dvc/commands/imp.py

@@ -18,15 +18,11 @@ class CmdImport(CmdBase):
                 self.args.url,
                 self.args.path,
                 out=self.args.out,
-                fname=self.args.file,
                 rev=self.args.rev,
                 no_exec=self.args.no_exec,
                 no_download=self.args.no_download,
-                desc=self.args.desc,
-                type=self.args.type,
-                labels=self.args.labels,
-                meta=self.args.meta,
                 jobs=self.args.jobs,
+                config=self.args.config,
             )
         except CloneError:
             logger.exception("failed to import '%s'", self.args.path)
@@ -42,8 +38,6 @@ class CmdImport(CmdBase):
 
 
 def add_parser(subparsers, parent_parser):
-    from .add import _add_annotating_args
-
     IMPORT_HELP = (
         "Download file or directory tracked by DVC or by Git "
         "into the workspace, and track it."
@@ -75,11 +69,6 @@ def add_parser(subparsers, parent_parser):
         help="Git revision (e.g. SHA, branch, tag)",
         metavar="<commit>",
     )
-    import_parser.add_argument(
-        "--file",
-        help="Specify name of the .dvc file this command will generate.",
-        metavar="<filename>",
-    )
     no_download_exec_group = import_parser.add_mutually_exclusive_group()
     no_download_exec_group.add_argument(
         "--no-exec",
@@ -106,6 +95,12 @@ def add_parser(subparsers, parent_parser):
         ),
         metavar="<number>",
     )
-
-    _add_annotating_args(import_parser)
+    import_parser.add_argument(
+        "--config",
+        type=str,
+        help=(
+            "Path to a config file that will be merged with the config "
+            "in the target repository."
+        ),
+    )
     import_parser.set_defaults(func=CmdImport)

dvc/commands/imp_url.py

@@ -15,16 +15,12 @@ class CmdImportUrl(CmdBase):
             self.repo.imp_url(
                 self.args.url,
                 out=self.args.out,
-                fname=self.args.file,
                 no_exec=self.args.no_exec,
                 no_download=self.args.no_download,
                 remote=self.args.remote,
                 to_remote=self.args.to_remote,
-                desc=self.args.desc,
-                type=self.args.type,
-                labels=self.args.labels,
-                meta=self.args.meta,
                 jobs=self.args.jobs,
+                force=self.args.force,
                 version_aware=self.args.version_aware,
             )
         except DvcException:
@@ -40,8 +36,6 @@ class CmdImportUrl(CmdBase):
 
 
 def add_parser(subparsers, parent_parser):
-    from .add import _add_annotating_args
-
     IMPORT_HELP = "Download or copy file from URL and take it under DVC control."
 
     import_parser = subparsers.add_parser(
@@ -69,11 +63,6 @@ def add_parser(subparsers, parent_parser):
     import_parser.add_argument(
         "out", nargs="?", help="Destination path to put files to."
     ).complete = completion.DIR
-    import_parser.add_argument(
-        "--file",
-        help="Specify name of the .dvc file this command will generate.",
-        metavar="<filename>",
-    ).complete = completion.DIR
     import_parser.add_argument(
         "--to-remote",
         action="store_true",
@@ -112,11 +101,17 @@ def add_parser(subparsers, parent_parser):
         ),
         metavar="<number>",
     )
+    import_parser.add_argument(
+        "-f",
+        "--force",
+        action="store_true",
+        default=False,
+        help="Override local file or folder if exists.",
+    )
     import_parser.add_argument(
         "--version-aware",
         action="store_true",
         default=False,
         help="Import using cloud versioning. Implied if the URL contains a version ID.",
     )
-    _add_annotating_args(import_parser)
     import_parser.set_defaults(func=CmdImportUrl)

dvc/commands/ls/__init__.py

@@ -34,6 +34,7 @@ class CmdList(CmdBaseNoRepo):
                 rev=self.args.rev,
                 recursive=self.args.recursive,
                 dvc_only=self.args.dvc_only,
+                config=self.args.config,
             )
             if self.args.json:
                 ui.write_json(entries)
@@ -71,7 +72,6 @@ def add_parser(subparsers, parent_parser):
     )
     list_parser.add_argument(
         "--json",
-        "--show-json",
         action="store_true",
         help="Show output in JSON format.",
     )
@@ -81,6 +81,14 @@ def add_parser(subparsers, parent_parser):
         help="Git revision (e.g. SHA, branch, tag)",
         metavar="<commit>",
     )
+    list_parser.add_argument(
+        "--config",
+        type=str,
+        help=(
+            "Path to a config file that will be merged with the config "
+            "in the target repository."
+        ),
+    )
     list_parser.add_argument(
         "path",
         nargs="?",

dvc/commands/metrics.py

@@ -140,14 +140,12 @@ def add_parser(subparsers, parent_parser):
     )
     metrics_show_parser.add_argument(
         "--json",
-        "--show-json",
         action="store_true",
         default=False,
         help="Show output in JSON format.",
     )
     metrics_show_parser.add_argument(
         "--md",
-        "--show-md",
         action="store_true",
         default=False,
         dest="markdown",
@@ -223,14 +221,12 @@ def add_parser(subparsers, parent_parser):
     )
     metrics_diff_parser.add_argument(
         "--json",
-        "--show-json",
         action="store_true",
         default=False,
         help="Show output in JSON format.",
     )
     metrics_diff_parser.add_argument(
         "--md",
-        "--show-md",
         action="store_true",
         default=False,
         dest="markdown",

dvc/commands/params.py

@@ -105,14 +105,12 @@ def add_parser(subparsers, parent_parser):
     )
     params_diff_parser.add_argument(
         "--json",
-        "--show-json",
         action="store_true",
         default=False,
         help="Show output in JSON format.",
     )
     params_diff_parser.add_argument(
         "--md",
-        "--show-md",
         action="store_true",
         default=False,
         dest="markdown",

dvc/commands/plots.py

@@ -1,9 +1,9 @@
 import argparse
-import json
 import logging
 import os
+from typing import TYPE_CHECKING, Dict, List, Optional
 
-from funcy import first
+from funcy import compact, first, get_in
 
 from dvc.cli import completion
 from dvc.cli.command import CmdBase
@@ -12,14 +12,51 @@ from dvc.exceptions import DvcException
 from dvc.ui import ui
 from dvc.utils import format_link
 
+if TYPE_CHECKING:
+    from dvc.render.match import RendererWithErrors
+
+
 logger = logging.getLogger(__name__)
 
 
-def _show_json(renderers, split=False):
+def _show_json(
+    renderers_with_errors: List["RendererWithErrors"],
+    split=False,
+    errors: Optional[Dict[str, Exception]] = None,
+):
     from dvc.render.convert import to_json
+    from dvc.utils.serialize import encode_exception
 
-    result = {renderer.name: to_json(renderer, split) for renderer in renderers}
-    ui.write_json(result, highlight=False)
+    all_errors: List[Dict] = []
+    data = {}
+
+    for renderer, src_errors, def_errors in renderers_with_errors:
+        name = renderer.name
+        data[name] = to_json(renderer, split)
+        all_errors.extend(
+            {
+                "name": name,
+                "rev": rev,
+                "source": source,
+                **encode_exception(e),
+            }
+            for rev, per_rev_src_errors in src_errors.items()
+            for source, e in per_rev_src_errors.items()
+        )
+        all_errors.extend(
+            {
+                "name": name,
+                "rev": rev,
+                **encode_exception(e),
+            }
+            for rev, e in def_errors.items()
+        )
+
+    # these errors are not tied to any renderers
+    errors = errors or {}
+    all_errors.extend({"rev": rev, **encode_exception(e)} for rev, e in errors.items())
+
+    ui.write_json(compact({"errors": all_errors, "data": data}), highlight=False)
 
 
 def _adjust_vega_renderers(renderers):
@@ -85,7 +122,7 @@ class CmdPlots(CmdBase):
             if html_template_path and not os.path.isabs(html_template_path):
                 assert self.repo.dvc_dir
                 html_template_path = os.path.join(self.repo.dvc_dir, html_template_path)
-        return html_template_path  # noqa: RET504
+        return html_template_path
 
     def run(self) -> int:  # noqa: C901, PLR0911, PLR0912
         from pathlib import Path
@@ -122,21 +159,27 @@ class CmdPlots(CmdBase):
             )
 
             renderers_out = out if self.args.json else os.path.join(out, "static")
-
-            renderers = match_defs_renderers(
+            renderers_with_errors = match_defs_renderers(
                 data=plots_data,
                 out=renderers_out,
                 templates_dir=self.repo.plots.templates_dir,
             )
             if self.args.json:
-                _show_json(renderers, self.args.split)
+                errors = compact(
+                    {
+                        rev: get_in(data, ["definitions", "error"])
+                        for rev, data in plots_data.items()
+                    }
+                )
+                _show_json(renderers_with_errors, self.args.split, errors=errors)
                 return 0
 
+            renderers = [r.renderer for r in renderers_with_errors]
             _adjust_vega_renderers(renderers)
             if self.args.show_vega:
                 renderer = first(filter(lambda r: r.TYPE == "vega", renderers))
                 if renderer:
-                    ui.write_json(json.loads(renderer.get_filled_template()))
+                    ui.write_json(renderer.get_filled_template(as_string=False))
                 return 0
 
             output_file: Path = (Path.cwd() / out).resolve() / "index.html"
@@ -387,7 +430,6 @@ def _add_ui_arguments(parser):
     )
     parser.add_argument(
         "--json",
-        "--show-json",
         action="store_true",
         default=False,
         help=argparse.SUPPRESS,

dvc/commands/queue/status.py

@@ -1,10 +1,8 @@
 import argparse
 import logging
-from typing import Dict, List, Optional
 
 from dvc.cli.command import CmdBase
 from dvc.cli.utils import append_doc_link
-from dvc.commands.experiments.show import format_time
 from dvc.compare import TabularData
 from dvc.ui import ui
 
@@ -15,9 +13,9 @@ class CmdQueueStatus(CmdBase):
     """Show queue task and worker status."""
 
     def run(self) -> int:
-        result: List[
-            Dict[str, Optional[str]]
-        ] = self.repo.experiments.celery_queue.status()
+        from dvc.repo.experiments.show import format_time
+
+        result = self.repo.experiments.celery_queue.status()
         if result:
             all_headers = ["Task", "Name", "Created", "Status"]
             td = TabularData(all_headers)

dvc/commands/remote.py

@@ -127,9 +127,7 @@ class CmdRemoteRename(CmdRemote):
         all_config = self.config.load_config_to_level(None)
         if self.args.new in all_config.get("remote", {}):
             raise ConfigError(
-                "Rename failed. Remote name '{}' already exists.".format(
-                    {self.args.new}
-                )
+                f"Rename failed. Remote name {self.args.new!r} already exists."
             )
 
         with self.config.edit(self.args.level) as conf:

dvc/commands/repro.py

@@ -16,12 +16,6 @@ class CmdRepro(CmdBase):
         else:
             ui.write("Use `dvc push` to send your updates to remote storage.")
 
-        if self.args.metrics:
-            from dvc.compare import show_metrics
-
-            metrics = self.repo.metrics.show()
-            show_metrics(metrics)
-
         return 0
 
     @property
@@ -38,6 +32,8 @@ class CmdRepro(CmdBase):
             "recursive": self.args.recursive,
             "force_downstream": self.args.force_downstream,
             "pull": self.args.pull,
+            "allow_missing": self.args.allow_missing,
+            "on_error": self.args.on_error,
         }
 
     @property
@@ -104,13 +100,6 @@ and then the stage name name.
         default=False,
         help="Reproduce all stages in the specified directory.",
     )
-    repro_parser.add_argument(
-        "-m",
-        "--metrics",
-        action="store_true",
-        default=False,
-        help="Show metrics after reproduction.",
-    )
     repro_parser.add_argument(
         "--downstream",
         action="store_true",
@@ -135,6 +124,12 @@ and then the stage name name.
             "from the run-cache."
         ),
     )
+    repro_parser.add_argument(
+        "--allow-missing",
+        action="store_true",
+        default=False,
+        help=("Skip stages with missing data but no other changes."),
+    )
     repro_parser.add_argument(
         "--dry",
         action="store_true",
@@ -143,6 +138,26 @@ and then the stage name name.
             "Only print the commands that would be executed without actually executing."
         ),
     )
+    repro_parser.add_argument(
+        "-k",
+        "--keep-going",
+        action="store_const",
+        default="fail",
+        const="keep-going",
+        dest="on_error",
+        help=(
+            "Continue executing, skipping stages having dependencies "
+            "on the failed stages"
+        ),
+    )
+    repro_parser.add_argument(
+        "--ignore-errors",
+        action="store_const",
+        default="fail",
+        const="ignore",
+        dest="on_error",
+        help="Ignore errors from stages.",
+    )
 
 
 def add_parser(subparsers, parent_parser):

dvc/commands/run.py

@@ -1,96 +0,0 @@
-import argparse
-import logging
-
-from dvc.cli.command import CmdBase
-from dvc.cli.utils import append_doc_link
-from dvc.commands.stage import parse_cmd
-from dvc.exceptions import DvcException
-
-logger = logging.getLogger(__name__)
-
-
-class CmdRun(CmdBase):
-    def run(self):
-        if not any(
-            [
-                self.args.deps,
-                self.args.outs,
-                self.args.outs_no_cache,
-                self.args.metrics,
-                self.args.metrics_no_cache,
-                self.args.plots,
-                self.args.plots_no_cache,
-                self.args.outs_persist,
-                self.args.outs_persist_no_cache,
-                self.args.checkpoints,
-                self.args.params,
-                self.args.command,
-            ]
-        ):  # pragma: no cover
-            logger.error(
-                "too few arguments. Specify at least one: `-d`, `-o`, `-O`, "
-                "`-m`, `-M`, `-p`, `--plots`, `--plots-no-cache`, "
-                "`--outs-persist`, `--outs-persist-no-cache`, `command`."
-            )
-            return 1
-
-        kwargs = vars(self.args)
-        kwargs.update(
-            {
-                "cmd": parse_cmd(self.args.command),
-                "fname": kwargs.pop("file"),
-                "no_exec": self.args.no_exec or bool(self.args.checkpoints),
-                "run_cache": not kwargs.pop("no_run_cache"),
-            }
-        )
-        try:
-            self.repo.run(**kwargs)
-        except DvcException:
-            logger.exception("")
-            return 1
-
-        return 0
-
-
-def add_parser(subparsers, parent_parser):
-    from dvc.commands.stage import _add_common_args
-
-    RUN_HELP = "Generate a dvc.yaml file from a command and execute the command."
-    run_parser = subparsers.add_parser(
-        "run",
-        parents=[parent_parser],
-        description=append_doc_link(RUN_HELP, "run"),
-        help=RUN_HELP,
-        formatter_class=argparse.RawDescriptionHelpFormatter,
-    )
-    run_parser.add_argument("-n", "--name", help="Stage name.")
-    run_parser.add_argument("--file", metavar="<filename>", help=argparse.SUPPRESS)
-    run_parser.add_argument(
-        "--single-stage",
-        action="store_true",
-        default=False,
-        help=argparse.SUPPRESS,
-    )
-    _add_common_args(run_parser)
-    run_parser.add_argument(
-        "--no-exec",
-        action="store_true",
-        default=False,
-        help="Only create dvc.yaml without actually running it.",
-    )
-    run_parser.add_argument(
-        "--no-commit",
-        action="store_true",
-        default=False,
-        help="Don't put files/directories into cache.",
-    )
-    run_parser.add_argument(
-        "--no-run-cache",
-        action="store_true",
-        default=False,
-        help=(
-            "Execute the command even if this stage has already been run "
-            "with the same command/dependencies/outputs/etc before."
-        ),
-    )
-    run_parser.set_defaults(func=CmdRun)

dvc/commands/stage.py

@@ -1,5 +1,6 @@
 import argparse
 import logging
+from contextlib import contextmanager
 from itertools import chain, filterfalse
 from typing import TYPE_CHECKING, Dict, Iterable, List
 
@@ -119,8 +120,22 @@ def parse_cmd(commands: List[str]) -> str:
     return " ".join(map(quote_argument, commands))
 
 
+@contextmanager
+def _disable_logging(highest_level=logging.CRITICAL):
+    previous_level = logging.root.manager.disable
+
+    logging.disable(highest_level)
+
+    try:
+        yield
+    finally:
+        logging.disable(previous_level)
+
+
 class CmdStageAdd(CmdBase):
     def run(self):
+        from dvc.repo import lock_repo
+
         kwargs = vars(self.args)
         kwargs.update(
             {
@@ -128,7 +143,15 @@ class CmdStageAdd(CmdBase):
                 "params": parse_params(self.args.params),
             }
         )
-        self.repo.stage.add(**kwargs)
+
+        with self.repo.scm_context, lock_repo(self.repo):
+            with _disable_logging(logging.INFO):
+                stage = self.repo.stage.add(**kwargs)
+            logger.info("Added stage %r in %r", stage.addressing, stage.relpath)
+            if self.args.run:
+                stage.run()
+                stage.dump(update_pipeline=False)
+
         return 0
 
 
@@ -172,23 +195,6 @@ def _add_common_args(parser):
         help="Declare output file or directory (do not put into DVC cache).",
         metavar="<filename>",
     ).complete = completion.FILE
-    parser.add_argument(
-        "-c",
-        "--checkpoints",
-        action="append",
-        default=[],
-        help=(
-            "Declare checkpoint output file or directory for 'dvc exp run'. "
-            "Not compatible with 'dvc repro'."
-        ),
-        metavar="<filename>",
-    ).complete = completion.FILE
-    parser.add_argument(
-        "--external",
-        action="store_true",
-        default=False,
-        help="Allow outputs that are outside of the DVC repository.",
-    )
     parser.add_argument(
         "--outs-persist",
         action="append",
@@ -257,6 +263,12 @@ def _add_common_args(parser):
             "This doesn't affect any DVC operations."
         ),
     )
+    parser.add_argument(
+        "--run",
+        action="store_true",
+        default=False,
+        help="Execute the stage after generating it.",
+    )
     parser.add_argument(
         "command",
         nargs=argparse.REMAINDER,

dvc/compare.py

@@ -22,7 +22,6 @@ from typing import (
 from funcy import reraise
 
 if TYPE_CHECKING:
-    from dvc.types import StrPath
     from dvc.ui.table import CellT
 
 
@@ -35,7 +34,7 @@ def with_value(value, default):
 
 
 class TabularData(MutableSequence[Sequence["CellT"]]):
-    def __init__(self, columns: Sequence[str], fill_value: str = ""):
+    def __init__(self, columns: Sequence[str], fill_value: Optional[str] = ""):
         self._columns: Dict[str, Column] = {name: Column() for name in columns}
         self._keys: List[str] = list(columns)
         self._fill_value = fill_value
@@ -161,24 +160,6 @@ class TabularData(MutableSequence[Sequence["CellT"]]):
             writer.writerow(row)
         return buff.getvalue()
 
-    def to_parallel_coordinates(
-        self, output_path: "StrPath", color_by: Optional[str] = None
-    ) -> "StrPath":
-        from dvc_render.html import render_html
-        from dvc_render.plotly import ParallelCoordinatesRenderer
-
-        render_html(
-            renderers=[
-                ParallelCoordinatesRenderer(
-                    self.as_dict(),
-                    color_by=color_by,
-                    fill_value=self._fill_value,
-                )
-            ],
-            output_file=output_path,
-        )
-        return output_path
-
     def add_column(self, name: str) -> None:
         self._columns[name] = Column([self._fill_value] * len(self))
         self._keys.append(name)

dvc/config.py

@@ -79,9 +79,6 @@ class Config(dict):
         ConfigError: thrown if config has an invalid format.
     """
 
-    APPNAME = "dvc"
-    APPAUTHOR = "iterative"
-
     SYSTEM_LEVELS = ("system", "global")
     REPO_LEVELS = ("repo", "local")
     # In the order they shadow each other
@@ -103,28 +100,32 @@ class Config(dict):
         self.wfs = LocalFileSystem()
         self.fs = fs or self.wfs
 
-        if not dvc_dir:
-            try:
-                from dvc.repo import Repo
-
-                self.dvc_dir = Repo.find_dvc_dir()
-            except NotDvcRepoError:
-                self.dvc_dir = None
-        else:
+        if dvc_dir:
             self.dvc_dir = self.fs.path.abspath(self.fs.path.realpath(dvc_dir))
 
         self.load(validate=validate, config=config)
 
+    @classmethod
+    def from_cwd(cls, fs: Optional["FileSystem"] = None, **kwargs):
+        from dvc.repo import Repo
+
+        try:
+            dvc_dir = Repo.find_dvc_dir(fs=fs)
+        except NotDvcRepoError:
+            dvc_dir = None
+
+        return cls(dvc_dir=dvc_dir, fs=fs, **kwargs)
+
     @classmethod
     def get_dir(cls, level):
-        from platformdirs import site_config_dir, user_config_dir
+        from dvc.dirs import global_config_dir, system_config_dir
 
         assert level in ("global", "system")
 
         if level == "global":
-            return user_config_dir(cls.APPNAME, cls.APPAUTHOR)
+            return global_config_dir()
         if level == "system":
-            return site_config_dir(cls.APPNAME, cls.APPAUTHOR)
+            return system_config_dir()
 
     @cached_property
     def files(self) -> Dict[str, str]:
@@ -175,23 +176,32 @@ class Config(dict):
         # the repo.
         return self.fs if level == "repo" else self.wfs
 
-    def _load_config(self, level):
+    @staticmethod
+    def load_file(path, fs=None) -> dict:
         from configobj import ConfigObj, ConfigObjError
 
+        from dvc.fs import localfs
+
+        fs = fs or localfs
+
+        with fs.open(path) as fobj:
+            try:
+                conf_obj = ConfigObj(fobj)
+            except UnicodeDecodeError as exc:
+                raise ConfigError(str(exc)) from exc
+            except ConfigObjError as exc:
+                raise ConfigError(str(exc)) from exc
+
+        return _parse_named(_lower_keys(conf_obj.dict()))
+
+    def _load_config(self, level):
         filename = self.files[level]
         fs = self._get_fs(level)
 
-        if fs.exists(filename):
-            with fs.open(filename) as fobj:
-                try:
-                    conf_obj = ConfigObj(fobj)
-                except UnicodeDecodeError as exc:
-                    raise ConfigError(str(exc)) from exc
-                except ConfigObjError as exc:
-                    raise ConfigError(str(exc)) from exc
-        else:
-            conf_obj = ConfigObj()
-        return _parse_named(_lower_keys(conf_obj.dict()))
+        try:
+            return self.load_file(filename, fs=fs)
+        except FileNotFoundError:
+            return {}
 
     def _save_config(self, level, conf_dict):
         from configobj import ConfigObj

dvc/config_schema.py

@@ -62,9 +62,9 @@ def ByUrl(mapping):  # noqa: N802
 
         parsed = urlparse(data["url"])
         # Windows absolute paths should really have scheme == "" (local)
-        if os.name == "nt" and len(parsed.scheme) == 1 and parsed.netloc == "":
+        if os.name == "nt" and len(parsed.scheme) == 1 and not parsed.netloc:
             return schemas[""](data)
-        if parsed.netloc == "":
+        if not parsed.netloc:
             return schemas[""](data)
         if parsed.scheme not in schemas:
             raise Invalid(f"Unsupported URL type {parsed.scheme}://")
@@ -75,7 +75,7 @@ def ByUrl(mapping):  # noqa: N802
 
 
 class RelPath(str):
-    pass
+    __slots__ = ()
 
 
 class FeatureSchema(Schema):
@@ -150,16 +150,17 @@ SCHEMA = {
         Optional("autostage", default=False): Bool,
         Optional("experiments"): Bool,  # obsoleted
         Optional("check_update", default=True): Bool,
+        "site_cache_dir": str,
         "machine": Lower,
     },
     "cache": {
-        "local": str,
-        "s3": str,
-        "gs": str,
-        "hdfs": str,
-        "webhdfs": str,
-        "ssh": str,
-        "azure": str,
+        "local": str,  # obsoleted
+        "s3": str,  # obsoleted
+        "gs": str,  # obsoleted
+        "hdfs": str,  # obsoleted
+        "webhdfs": str,  # obsoleted
+        "ssh": str,  # obsoleted
+        "azure": str,  # obsoleted
         # This is for default local cache
         "dir": str,
         **LOCAL_COMMON,
@@ -214,6 +215,7 @@ SCHEMA = {
                     "timeout": Coerce(int),
                     "gss_auth": Bool,
                     "allow_agent": Bool,
+                    "max_sessions": Coerce(int),
                     Optional("verify", default=False): Bool,
                     **REMOTE_COMMON,
                 },
@@ -325,4 +327,10 @@ SCHEMA = {
         "config_dir": str,
         "config_name": str,
     },
+    "studio": {
+        "token": str,
+        "url": str,
+        "repo_url": str,
+        Optional("offline", default=False): Bool,
+    },
 }

dvc/daemon.py

@@ -5,7 +5,7 @@ import logging
 import os
 import platform
 import sys
-from subprocess import Popen
+from subprocess import Popen  # nosec B404
 from typing import List
 
 from dvc.env import DVC_DAEMON
@@ -28,12 +28,14 @@ def _popen(cmd, **kwargs) -> Popen:
             os.path.abspath(os.path.dirname(__file__)), "__main__.py"
         )
         prefix += [main_entrypoint]
-    return Popen(prefix + cmd, close_fds=True, shell=False, **kwargs)
+    return Popen(
+        prefix + cmd, close_fds=True, shell=False, **kwargs  # nosec B603  # noqa: S603
+    )
 
 
 def _spawn_windows(cmd, env):
     if sys.platform == "win32":
-        from subprocess import (
+        from subprocess import (  # nosec B404
             CREATE_NEW_PROCESS_GROUP,
             CREATE_NO_WINDOW,
             STARTF_USESHOWWINDOW,
@@ -56,6 +58,13 @@ def _spawn_windows(cmd, env):
 def _spawn_posix(cmd, env):
     from dvc.cli import main
 
+    # `fork` will copy buffers, so we need to flush them before forking.
+    # Otherwise, we will get duplicated outputs.
+    if sys.stdout and not sys.stdout.closed:
+        sys.stdout.flush()
+    if sys.stderr and not sys.stderr.closed:
+        sys.stderr.flush()
+
     # NOTE: using os._exit instead of sys.exit, because dvc built
     # with PyInstaller has trouble with SystemExit exception and throws
     # errors such as "[26338] Failed to execute script __main__"
@@ -82,6 +91,7 @@ def _spawn_posix(cmd, env):
     sys.stdin.close()
     sys.stdout.close()
     sys.stderr.close()
+    os.closerange(0, 3)
 
     if platform.system() == "Darwin":
         # workaround for MacOS bug

dvc/dagascii.py

@@ -209,6 +209,30 @@ def draw(vertices, edges):
     Args:
         vertices (list): list of graph vertices.
         edges (list): list of graph edges.
+
+    Returns:
+        str: ASCII representation
+
+    Example:
+        >>> from dvc.dagascii import draw
+        >>> vertices = [1, 2, 3, 4]
+        >>> edges = [(1, 2), (2, 3), (2, 4), (1, 4)]
+        >>> print(draw(vertices, edges))
+        +---+     +---+
+        | 3 |     | 4 |
+        +---+    *+---+
+          *    **   *
+          *  **     *
+          * *       *
+        +---+       *
+        | 2 |      *
+        +---+     *
+             *    *
+              *  *
+               **
+             +---+
+             | 1 |
+             +---+
     """
     # pylint: disable=too-many-locals
     # NOTE: coordinates might me negative, so we need to shift

dvc/data_cloud.py

@@ -1,18 +1,18 @@
 """Manages dvc remotes that user can use with push/pull/status commands."""
 
 import logging
-from typing import TYPE_CHECKING, Iterable, Optional
+from typing import TYPE_CHECKING, Iterable, Optional, Set, Tuple
 
 from dvc.config import NoRemoteError, RemoteConfigError
 from dvc.utils.objects import cached_property
 from dvc_data.hashfile.db import get_index
+from dvc_data.hashfile.transfer import TransferResult
 
 if TYPE_CHECKING:
     from dvc.fs import FileSystem
     from dvc_data.hashfile.db import HashFileDB
     from dvc_data.hashfile.hash_info import HashInfo
     from dvc_data.hashfile.status import CompareStatusResult
-    from dvc_data.hashfile.transfer import TransferResult
 
 logger = logging.getLogger(__name__)
 
@@ -29,13 +29,40 @@ class Remote:
 
     @cached_property
     def odb(self) -> "HashFileDB":
+        from dvc.cachemgr import CacheManager
         from dvc_data.hashfile.db import get_odb
+        from dvc_data.hashfile.hash import DEFAULT_ALGORITHM
 
         path = self.path
         if self.worktree:
-            path = self.fs.path.join(path, ".dvc", "cache")
+            path = self.fs.path.join(
+                path, ".dvc", CacheManager.FILES_DIR, DEFAULT_ALGORITHM
+            )
+        else:
+            path = self.fs.path.join(path, CacheManager.FILES_DIR, DEFAULT_ALGORITHM)
+        return get_odb(self.fs, path, hash_name=DEFAULT_ALGORITHM, **self.config)
 
-        return get_odb(self.fs, path, hash_name="md5", **self.config)
+    @cached_property
+    def legacy_odb(self) -> "HashFileDB":
+        from dvc_data.hashfile.db import get_odb
+
+        path = self.path
+        return get_odb(self.fs, path, hash_name="md5-dos2unix", **self.config)
+
+
+def _split_legacy_hash_infos(
+    hash_infos: Iterable["HashInfo"],
+) -> Tuple[Set["HashInfo"], Set["HashInfo"]]:
+    from dvc.cachemgr import LEGACY_HASH_NAMES
+
+    legacy = set()
+    default = set()
+    for hi in hash_infos:
+        if hi.name in LEGACY_HASH_NAMES:
+            legacy.add(hi)
+        else:
+            default.add(hi)
+    return legacy, default
 
 
 class DataCloud:
@@ -63,7 +90,7 @@ class DataCloud:
         if name:
             from dvc.fs import get_cloud_fs
 
-            cls, config, fs_path = get_cloud_fs(self.repo, name=name)
+            cls, config, fs_path = get_cloud_fs(self.repo.config, name=name)
 
             if config.get("worktree"):
                 version_aware = config.get("version_aware")
@@ -84,14 +111,14 @@ class DataCloud:
 
         if bool(self.repo.config["remote"]):
             error_msg = (
-                "no remote specified. Setup default remote with\n"
+                f"no remote specified in {self.repo}. Setup default remote with\n"
                 "    dvc remote default <remote name>\n"
                 "or use:\n"
-                "    dvc {} -r <remote name>".format(command)
+                f"    dvc {command} -r <remote name>"
             )
         else:
             error_msg = (
-                "no remote specified. Create a default remote with\n"
+                f"no remote specified in {self.repo}. Create a default remote with\n"
                 "    dvc remote add -d <remote name> <remote url>"
             )
 
@@ -101,12 +128,17 @@ class DataCloud:
         self,
         name: Optional[str] = None,
         command: str = "<command>",
+        hash_name: str = "md5",
     ) -> "HashFileDB":
+        from dvc.cachemgr import LEGACY_HASH_NAMES
+
         remote = self.get_remote(name=name, command=command)
         if remote.fs.version_aware or remote.worktree:
             raise NoRemoteError(
                 f"'{command}' is unsupported for cloud versioned remotes"
             )
+        if hash_name in LEGACY_HASH_NAMES:
+            return remote.legacy_odb
         return remote.odb
 
     def _log_missing(self, status: "CompareStatusResult"):
@@ -150,14 +182,40 @@ class DataCloud:
                 By default remote from core.remote config option is used.
             odb: optional ODB to push to. Overrides remote.
         """
-        odb = odb or self.get_remote_odb(remote, "push")
+        if odb is not None:
+            return self._push(objs, jobs=jobs, odb=odb)
+        legacy_objs, default_objs = _split_legacy_hash_infos(objs)
+        result = TransferResult(set(), set())
+        if legacy_objs:
+            odb = self.get_remote_odb(remote, "push", hash_name="md5-dos2unix")
+            t, f = self._push(legacy_objs, jobs=jobs, odb=odb)
+            result.transferred.update(t)
+            result.failed.update(f)
+        if default_objs:
+            odb = self.get_remote_odb(remote, "push")
+            t, f = self._push(default_objs, jobs=jobs, odb=odb)
+            result.transferred.update(t)
+            result.failed.update(f)
+        return result
+
+    def _push(
+        self,
+        objs: Iterable["HashInfo"],
+        *,
+        jobs: Optional[int] = None,
+        odb: "HashFileDB",
+    ) -> "TransferResult":
+        if odb.hash_name == "md5-dos2unix":
+            cache = self.repo.cache.legacy
+        else:
+            cache = self.repo.cache.local
         return self.transfer(
-            self.repo.cache.local,
+            cache,
             odb,
             objs,
             jobs=jobs,
             dest_index=get_index(odb),
-            cache_odb=self.repo.cache.local,
+            cache_odb=cache,
             validate_status=self._log_missing,
         )
 
@@ -177,14 +235,41 @@ class DataCloud:
                 By default remote from core.remote config option is used.
             odb: optional ODB to pull from. Overrides remote.
         """
-        odb = odb or self.get_remote_odb(remote, "pull")
+        if odb is not None:
+            return self._pull(objs, jobs=jobs, odb=odb)
+        legacy_objs, default_objs = _split_legacy_hash_infos(objs)
+        result = TransferResult(set(), set())
+        if legacy_objs:
+            odb = self.get_remote_odb(remote, "pull", hash_name="md5-dos2unix")
+            assert odb.hash_name == "md5-dos2unix"
+            t, f = self._pull(legacy_objs, jobs=jobs, odb=odb)
+            result.transferred.update(t)
+            result.failed.update(f)
+        if default_objs:
+            odb = self.get_remote_odb(remote, "pull")
+            t, f = self._pull(default_objs, jobs=jobs, odb=odb)
+            result.transferred.update(t)
+            result.failed.update(f)
+        return result
+
+    def _pull(
+        self,
+        objs: Iterable["HashInfo"],
+        *,
+        jobs: Optional[int] = None,
+        odb: "HashFileDB",
+    ) -> "TransferResult":
+        if odb.hash_name == "md5-dos2unix":
+            cache = self.repo.cache.legacy
+        else:
+            cache = self.repo.cache.local
         return self.transfer(
             odb,
-            self.repo.cache.local,
+            cache,
             objs,
             jobs=jobs,
             src_index=get_index(odb),
-            cache_odb=self.repo.cache.local,
+            cache_odb=cache,
             verify=odb.verify,
             validate_status=self._log_missing,
         )
@@ -206,17 +291,49 @@ class DataCloud:
                 is used.
             odb: optional ODB to check status from. Overrides remote.
         """
+        from dvc_data.hashfile.status import CompareStatusResult
+
+        if odb is not None:
+            return self._status(objs, jobs=jobs, odb=odb)
+        result = CompareStatusResult(set(), set(), set(), set())
+        legacy_objs, default_objs = _split_legacy_hash_infos(objs)
+        if legacy_objs:
+            odb = self.get_remote_odb(remote, "status", hash_name="md5-dos2unix")
+            assert odb.hash_name == "md5-dos2unix"
+            o, m, n, d = self._status(legacy_objs, jobs=jobs, odb=odb)
+            result.ok.update(o)
+            result.missing.update(m)
+            result.new.update(n)
+            result.deleted.update(d)
+        if default_objs:
+            odb = self.get_remote_odb(remote, "status")
+            o, m, n, d = self._status(default_objs, jobs=jobs, odb=odb)
+            result.ok.update(o)
+            result.missing.update(m)
+            result.new.update(n)
+            result.deleted.update(d)
+        return result
+
+    def _status(
+        self,
+        objs: Iterable["HashInfo"],
+        *,
+        jobs: Optional[int] = None,
+        odb: "HashFileDB",
+    ):
         from dvc_data.hashfile.status import compare_status
 
-        if not odb:
-            odb = self.get_remote_odb(remote, "status")
+        if odb.hash_name == "md5-dos2unix":
+            cache = self.repo.cache.legacy
+        else:
+            cache = self.repo.cache.local
         return compare_status(
-            self.repo.cache.local,
+            cache,
             odb,
             objs,
             jobs=jobs,
             dest_index=get_index(odb),
-            cache_odb=self.repo.cache.local,
+            cache_odb=cache,
         )
 
     def get_url_for(self, remote, checksum):

dvc/dependency/__init__.py

@@ -14,7 +14,6 @@ from .repo import RepoDependency
 SCHEMA: Mapping[str, Any] = {
     **ARTIFACT_SCHEMA,
     **RepoDependency.REPO_SCHEMA,
-    **ParamsDependency.PARAM_SCHEMA,
     Output.PARAM_FILES: [DIR_FILES_SCHEMA],
 }
 
@@ -36,7 +35,8 @@ def loadd_from(stage, d_list):
     for d in d_list:
         p = d.pop(Output.PARAM_PATH, None)
         files = d.pop(Output.PARAM_FILES, None)
-        ret.append(_get(stage, p, d, files=files))
+        hash_name = d.pop(Output.PARAM_HASH, None)
+        ret.append(_get(stage, p, d, files=files, hash_name=hash_name))
     return ret
 
 

dvc/dependency/base.py

@@ -50,7 +50,7 @@ class Dependency(Output):
             self.fs_path = self.fs.path.version_path(self.fs_path, self.meta.version_id)
 
     def download(self, to, jobs=None):
-        fs_download(self.fs, self.fs_path, to, jobs=jobs)
+        fs_download(self.fs, self.fs_path, to.fs_path, jobs=jobs)
 
     def save(self):
         super().save()

dvc/dependency/param.py

@@ -2,10 +2,9 @@ import logging
 import os
 import typing
 from collections import defaultdict
-from typing import Dict
+from typing import Any, Dict
 
 import dpath
-from voluptuous import Any
 
 from dvc.exceptions import DvcException
 from dvc.utils.serialize import ParseError, load_path
@@ -34,7 +33,6 @@ class BadParamFileError(DvcException):
 
 class ParamsDependency(Dependency):
     PARAM_PARAMS = "params"
-    PARAM_SCHEMA = {PARAM_PARAMS: Any(dict, list, None)}
     DEFAULT_PARAMS_FILE = "params.yaml"
 
     def __init__(self, stage, path, params=None, repo=None):
@@ -48,6 +46,7 @@ class ParamsDependency(Dependency):
         repo = repo or stage.repo
         path = path or os.path.join(repo.root_dir, self.DEFAULT_PARAMS_FILE)
         super().__init__(stage, path, repo=repo)
+        self.hash_name = self.PARAM_PARAMS
         self.hash_info = hash_info
 
     def dumpd(self, **kwargs):

dvc/dependency/repo.py

@@ -1,24 +1,14 @@
-import os
-from collections import defaultdict
-from copy import copy
-from typing import TYPE_CHECKING, Dict, Optional, Set, Tuple, Union
+from typing import TYPE_CHECKING, Dict, Optional, Union
 
 from voluptuous import Required
 
-from dvc.prompt import confirm
+from dvc.utils import as_posix
 
 from .base import Dependency
 
 if TYPE_CHECKING:
-    from typing import ContextManager
-
-    from dvc.output import Output
-    from dvc.repo import Repo
+    from dvc.fs import DVCFileSystem
     from dvc.stage import Stage
-    from dvc_data.hashfile.hash_info import HashInfo
-    from dvc_data.hashfile.meta import Meta
-    from dvc_data.hashfile.obj import HashFile
-    from dvc_objects.db import ObjectDB
 
 
 class RepoDependency(Dependency):
@@ -26,21 +16,24 @@ class RepoDependency(Dependency):
     PARAM_URL = "url"
     PARAM_REV = "rev"
     PARAM_REV_LOCK = "rev_lock"
+    PARAM_CONFIG = "config"
 
     REPO_SCHEMA = {
         PARAM_REPO: {
             Required(PARAM_URL): str,
             PARAM_REV: str,
             PARAM_REV_LOCK: str,
+            PARAM_CONFIG: str,
         }
     }
 
     def __init__(self, def_repo: Dict[str, str], stage: "Stage", *args, **kwargs):
         self.def_repo = def_repo
-        self._objs: Dict[str, "HashFile"] = {}
-        self._meta: Dict[str, "Meta"] = {}
         super().__init__(stage, *args, **kwargs)
 
+        self.fs = self._make_fs()
+        self.fs_path = as_posix(self.def_path)
+
     def _parse_path(self, fs, fs_path):  # noqa: ARG002
         return None
 
@@ -52,8 +45,8 @@ class RepoDependency(Dependency):
         return f"{self.def_path} ({self.def_repo[self.PARAM_URL]})"
 
     def workspace_status(self):
-        current = self.get_obj(locked=True).hash_info
-        updated = self.get_obj(locked=False).hash_info
+        current = self._make_fs(locked=True).repo.get_rev()
+        updated = self._make_fs(locked=False).repo.get_rev()
 
         if current != updated:
             return {str(self): "update available"}
@@ -64,33 +57,35 @@ class RepoDependency(Dependency):
         return self.workspace_status()
 
     def save(self):
-        pass
+        rev = self.fs.repo.get_rev()
+        if self.def_repo.get(self.PARAM_REV_LOCK) is None:
+            self.def_repo[self.PARAM_REV_LOCK] = rev
 
     def dumpd(self, **kwargs) -> Dict[str, Union[str, Dict[str, str]]]:
-        return {self.PARAM_PATH: self.def_path, self.PARAM_REPO: self.def_repo}
+        repo = {self.PARAM_URL: self.def_repo[self.PARAM_URL]}
 
-    def download(self, to: "Output", jobs: Optional[int] = None):
-        from dvc_data.hashfile.checkout import checkout
+        rev = self.def_repo.get(self.PARAM_REV)
+        if rev:
+            repo[self.PARAM_REV] = self.def_repo[self.PARAM_REV]
 
-        for odb, objs in self.get_used_objs().items():
-            self.repo.cloud.pull(objs, jobs=jobs, odb=odb)
+        rev_lock = self.def_repo.get(self.PARAM_REV_LOCK)
+        if rev_lock:
+            repo[self.PARAM_REV_LOCK] = rev_lock
 
-        obj = self.get_obj()
-        checkout(
-            to.fs_path,
-            to.fs,
-            obj,
-            self.repo.cache.local,
-            ignore=None,
-            state=self.repo.state,
-            prompt=confirm,
-        )
+        config = self.def_repo.get(self.PARAM_CONFIG)
+        if config:
+            repo[self.PARAM_CONFIG] = config
+
+        return {
+            self.PARAM_PATH: self.def_path,
+            self.PARAM_REPO: repo,
+        }
 
     def update(self, rev: Optional[str] = None):
         if rev:
             self.def_repo[self.PARAM_REV] = rev
-        with self._make_repo(locked=False) as repo:
-            self.def_repo[self.PARAM_REV_LOCK] = repo.get_rev()
+        self.fs = self._make_fs(rev=rev, locked=False)
+        self.def_repo[self.PARAM_REV_LOCK] = self.fs.repo.get_rev()
 
     def changed_checksum(self) -> bool:
         # From current repo point of view what describes RepoDependency is its
@@ -98,124 +93,27 @@ class RepoDependency(Dependency):
         # immutable, hence its impossible for checksum to change.
         return False
 
-    def get_used_objs(self, **kwargs) -> Dict[Optional["ObjectDB"], Set["HashInfo"]]:
-        used, _, _ = self._get_used_and_obj(**kwargs)
-        return used
+    def _make_fs(
+        self, rev: Optional[str] = None, locked: bool = True
+    ) -> "DVCFileSystem":
+        from dvc.config import Config
+        from dvc.fs import DVCFileSystem
 
-    def _get_used_and_obj(
-        self, obj_only: bool = False, **kwargs
-    ) -> Tuple[Dict[Optional["ObjectDB"], Set["HashInfo"]], "Meta", "HashFile"]:
-        from dvc.config import NoRemoteError
-        from dvc.exceptions import NoOutputOrStageError, PathMissingError
-        from dvc.utils import as_posix
-        from dvc_data.hashfile.build import build
-        from dvc_data.hashfile.tree import Tree, TreeError
+        conf = self.def_repo.get("config")
+        if conf:
+            config = Config.load_file(conf)
+        else:
+            config = {}
 
-        local_odb = self.repo.cache.local
-        locked = kwargs.pop("locked", True)
-        with self._make_repo(locked=locked, cache_dir=local_odb.path) as repo:
-            used_obj_ids = defaultdict(set)
-            rev = repo.get_rev()
-            if locked and self.def_repo.get(self.PARAM_REV_LOCK) is None:
-                self.def_repo[self.PARAM_REV_LOCK] = rev
+        config["cache"] = self.repo.config["cache"]
+        config["cache"]["dir"] = self.repo.cache.local_cache_dir
 
-            if not obj_only:
-                try:
-                    for odb, obj_ids in repo.used_objs(
-                        [os.path.join(repo.root_dir, self.def_path)],
-                        force=True,
-                        jobs=kwargs.get("jobs"),
-                        recursive=True,
-                    ).items():
-                        if odb is None:
-                            odb = repo.cloud.get_remote_odb()
-                            odb.read_only = True
-                        self._check_circular_import(odb, obj_ids)
-                        used_obj_ids[odb].update(obj_ids)
-                except (NoRemoteError, NoOutputOrStageError):
-                    pass
-
-            try:
-                object_store, meta, obj = build(
-                    local_odb,
-                    as_posix(self.def_path),
-                    repo.dvcfs,
-                    local_odb.fs.PARAM_CHECKSUM,
-                )
-            except (FileNotFoundError, TreeError) as exc:
-                raise PathMissingError(
-                    self.def_path, self.def_repo[self.PARAM_URL]
-                ) from exc
-            object_store = copy(object_store)
-            object_store.read_only = True
-
-            self._objs[rev] = obj
-            self._meta[rev] = meta
-
-            used_obj_ids[object_store].add(obj.hash_info)
-            if isinstance(obj, Tree):
-                used_obj_ids[object_store].update(oid for _, _, oid in obj)
-            return used_obj_ids, meta, obj
-
-    def _check_circular_import(self, odb: "ObjectDB", obj_ids: Set["HashInfo"]) -> None:
-        from dvc.exceptions import CircularImportError
-        from dvc.fs.dvc import DVCFileSystem
-        from dvc_data.hashfile.db.reference import ReferenceHashFileDB
-        from dvc_data.hashfile.tree import Tree
-
-        if not isinstance(odb, ReferenceHashFileDB):
-            return
-
-        def iter_objs():
-            for hash_info in obj_ids:
-                if hash_info.isdir:
-                    tree = Tree.load(odb, hash_info)
-                    yield from (odb.get(hi.value) for _, _, hi in tree)
-                else:
-                    assert hash_info.value
-                    yield odb.get(hash_info.value)
-
-        checked_urls = set()
-        for obj in iter_objs():
-            if not isinstance(obj.fs, DVCFileSystem):
-                continue
-            if obj.fs.repo_url in checked_urls or obj.fs.repo.root_dir in checked_urls:
-                continue
-            self_url = self.repo.url or self.repo.root_dir
-            if (
-                obj.fs.repo_url is not None
-                and obj.fs.repo_url == self_url
-                or obj.fs.repo.root_dir == self.repo.root_dir
-            ):
-                raise CircularImportError(self, obj.fs.repo_url, self_url)
-            checked_urls.update([obj.fs.repo_url, obj.fs.repo.root_dir])
-
-    def get_obj(self, filter_info=None, **kwargs):
-        locked = kwargs.get("locked", True)
-        rev = self._get_rev(locked=locked)
-        if rev in self._objs:
-            return self._objs[rev]
-        _, _, obj = self._get_used_and_obj(
-            obj_only=True, filter_info=filter_info, **kwargs
+        return DVCFileSystem(
+            url=self.def_repo[self.PARAM_URL],
+            rev=rev or self._get_rev(locked=locked),
+            subrepos=True,
+            config=config,
         )
-        return obj
-
-    def get_meta(self, filter_info=None, **kwargs):
-        locked = kwargs.get("locked", True)
-        rev = self._get_rev(locked=locked)
-        if rev in self._meta:
-            return self._meta[rev]
-        _, meta, _ = self._get_used_and_obj(
-            obj_only=True, filter_info=filter_info, **kwargs
-        )
-        return meta
-
-    def _make_repo(self, locked: bool = True, **kwargs) -> "ContextManager[Repo]":
-        from dvc.external_repo import external_repo
-
-        d = self.def_repo
-        rev = self._get_rev(locked=locked)
-        return external_repo(d[self.PARAM_URL], rev=rev, **kwargs)
 
     def _get_rev(self, locked: bool = True):
         d = self.def_repo

dvc/dirs.py

@@ -0,0 +1,26 @@
+import os
+
+import platformdirs
+
+from . import env
+
+APPNAME = "dvc"
+APPAUTHOR = "iterative"
+
+
+def system_config_dir():
+    return os.getenv(env.DVC_SYSTEM_CONFIG_DIR) or platformdirs.site_config_dir(
+        APPNAME, APPAUTHOR
+    )
+
+
+def global_config_dir():
+    return os.getenv(env.DVC_SYSTEM_CONFIG_DIR) or platformdirs.user_config_dir(
+        APPNAME, APPAUTHOR
+    )
+
+
+def site_cache_dir():
+    return os.getenv(env.DVC_SITE_CACHE_DIR) or platformdirs.site_cache_dir(
+        APPNAME, APPAUTHOR, opinion=True
+    )

dvc/dvcfile.py

@@ -14,7 +14,6 @@ from typing import (
 )
 
 from dvc.exceptions import DvcException
-from dvc.parsing.versions import LOCKFILE_VERSION, SCHEMA_KWD
 from dvc.stage import serialize
 from dvc.stage.exceptions import (
     StageFileBadNameError,
@@ -36,7 +35,6 @@ if TYPE_CHECKING:
 logger = logging.getLogger(__name__)
 _T = TypeVar("_T")
 
-DVC_FILE = "Dvcfile"
 DVC_FILE_SUFFIX = ".dvc"
 PROJECT_FILE = "dvc.yaml"
 LOCK_FILE = "dvc.lock"
@@ -56,10 +54,7 @@ class ParametrizedDumpError(DvcException):
 
 
 def is_valid_filename(path):
-    return path.endswith(DVC_FILE_SUFFIX) or os.path.basename(path) in [
-        DVC_FILE,
-        PROJECT_FILE,
-    ]
+    return path.endswith(DVC_FILE_SUFFIX) or os.path.basename(path) == PROJECT_FILE
 
 
 def is_dvc_file(path):
@@ -102,9 +97,7 @@ class FileMixin:
         self.verify = verify
 
     def __repr__(self):
-        return "{}: {}".format(
-            self.__class__.__name__, relpath(self.path, self.repo.root_dir)
-        )
+        return f"{self.__class__.__name__}: {relpath(self.path, self.repo.root_dir)}"
 
     def __hash__(self):
         return hash(self.path)
@@ -192,6 +185,7 @@ class SingleStageFile(FileMixin):
     metrics: List[str] = []
     plots: Any = {}
     params: List[str] = []
+    artifacts: Dict[str, Optional[Dict[str, Any]]] = {}
 
     @property
     def stage(self) -> "Stage":
@@ -323,6 +317,10 @@ class ProjectFile(FileMixin):
     def params(self) -> List[str]:
         return self.contents.get("params", [])
 
+    @property
+    def artifacts(self) -> Dict[str, Optional[Dict[str, Any]]]:
+        return self.contents.get("artifacts", {})
+
     def remove(self, force=False):
         if not force:
             logger.warning("Cannot remove pipeline file.")
@@ -353,36 +351,8 @@ class ProjectFile(FileMixin):
         raise NotImplementedError
 
 
-def get_lockfile_schema(d):
-    from dvc.schema import COMPILED_LOCKFILE_V1_SCHEMA, COMPILED_LOCKFILE_V2_SCHEMA
-
-    schema = {
-        LOCKFILE_VERSION.V1: COMPILED_LOCKFILE_V1_SCHEMA,
-        LOCKFILE_VERSION.V2: COMPILED_LOCKFILE_V2_SCHEMA,
-    }
-
-    version = LOCKFILE_VERSION.from_dict(d)
-    return schema[version]
-
-
-def migrate_lock_v1_to_v2(d, version_info):
-    stages = {k: v for k, v in d.items()}
-
-    for key in stages:
-        d.pop(key)
-
-    # forcing order, meta should always be at the top
-    d.update(version_info)
-    d["stages"] = stages
-
-
-def lockfile_schema(data: _T) -> _T:
-    schema = get_lockfile_schema(data)
-    return schema(data)
-
-
 class Lockfile(FileMixin):
-    SCHEMA = staticmethod(lockfile_schema)  # type: ignore[assignment]
+    from dvc.schema import COMPILED_LOCKFILE_SCHEMA as SCHEMA
 
     def _verify_filename(self):
         pass  # lockfile path is hardcoded, so no need to verify here
@@ -396,21 +366,12 @@ class Lockfile(FileMixin):
             self._check_gitignored()
             return {}, ""
 
-    @property
-    def latest_version_info(self):
-        version = LOCKFILE_VERSION.V2.value  # pylint:disable=no-member
-        return {SCHEMA_KWD: version}
-
     def dump(self, stage, **kwargs):
         stage_data = serialize.to_lockfile(stage, **kwargs)
 
         with modify_yaml(self.path, fs=self.repo.fs) as data:
-            version = LOCKFILE_VERSION.from_dict(data)
-            if version == LOCKFILE_VERSION.V1:
-                logger.info("Migrating lock file '%s' from v1 to v2", self.relpath)
-                migrate_lock_v1_to_v2(data, self.latest_version_info)
-            elif not data:
-                data.update(self.latest_version_info)
+            if not data:
+                data.update({"schema": "2.0"})
                 # order is important, meta should always be at the top
                 logger.info("Generating lock file '%s'", self.relpath)
 
@@ -431,8 +392,7 @@ class Lockfile(FileMixin):
             return
 
         d, _ = self._load_yaml(round_trip=True)
-        version = LOCKFILE_VERSION.from_dict(d)
-        data = d if version == LOCKFILE_VERSION.V1 else d.get("stages", {})
+        data = d.get("stages", {})
         if stage.name not in data:
             return
 

dvc/env.py

@@ -1,11 +1,17 @@
-DVC_CHECKPOINT = "DVC_CHECKPOINT"
 DVC_DAEMON = "DVC_DAEMON"
+DVC_EXP_AUTO_PUSH = "DVC_EXP_AUTO_PUSH"
+DVC_EXP_BASELINE_REV = "DVC_EXP_BASELINE_REV"
+DVC_EXP_GIT_REMOTE = "DVC_EXP_GIT_REMOTE"
+DVC_EXP_NAME = "DVC_EXP_NAME"
+DVC_GLOBAL_CONFIG_DIR = "DVC_GLOBAL_CONFIG_DIR"
+DVC_IGNORE_ISATTY = "DVC_IGNORE_ISATTY"
+DVC_NO_ANALYTICS = "DVC_NO_ANALYTICS"
 DVC_PAGER = "DVC_PAGER"
 DVC_ROOT = "DVC_ROOT"
-DVCLIVE_RESUME = "DVCLIVE_RESUME"
-DVC_IGNORE_ISATTY = "DVC_IGNORE_ISATTY"
-DVC_EXP_BASELINE_REV = "DVC_EXP_BASELINE_REV"
-DVC_EXP_NAME = "DVC_EXP_NAME"
-DVC_EXP_GIT_REMOTE = "DVC_EXP_GIT_REMOTE"
-DVC_EXP_AUTO_PUSH = "DVC_EXP_AUTO_PUSH"
-DVC_NO_ANALYTICS = "DVC_NO_ANALYTICS"
+DVC_SHOW_TRACEBACK = "DVC_SHOW_TRACEBACK"
+DVC_SITE_CACHE_DIR = "DVC_SITE_CACHE_DIR"
+DVC_STUDIO_OFFLINE = "DVC_STUDIO_OFFLINE"
+DVC_STUDIO_REPO_URL = "DVC_STUDIO_REPO_URL"
+DVC_STUDIO_TOKEN = "DVC_STUDIO_TOKEN"  # noqa: S105 # nosec B105
+DVC_STUDIO_URL = "DVC_STUDIO_URL"
+DVC_SYSTEM_CONFIG_DIR = "DVC_SYSTEM_CONFIG_DIR"

dvc/exceptions.py

@@ -1,4 +1,5 @@
 """Exceptions raised by the dvc."""
+import errno
 from typing import Dict, List
 
 from dvc.utils import format_link
@@ -16,6 +17,10 @@ class DvcException(Exception):
 class InvalidArgumentError(ValueError, DvcException):
     """Thrown if arguments are invalid."""
 
+    def __init__(self, msg, *args):
+        self.msg = msg
+        super().__init__(msg, *args)
+
 
 class OutputDuplicationError(DvcException):
     """Thrown if a file/directory is specified as an output in more than one
@@ -31,14 +36,19 @@ class OutputDuplicationError(DvcException):
 
         assert isinstance(output, str)
         assert all(hasattr(stage, "relpath") for stage in stages)
+        msg = ""
+        stage_names = [s.addressing for s in stages]
+        stages_str = " ".join(stage_names)
         if len(stages) == 1:
-            msg = "output '{}' is already specified in {}.".format(
-                output, first(stages)
-            )
+            stage_name = first(stages)
+            msg = f"output '{output}' is already specified in {stage_name}."
         else:
             msg = "output '{}' is already specified in stages:\n{}".format(
-                output, "\n".join(f"\t- {s.addressing}" for s in stages)
+                output, "\n".join(f"\t- {s}" for s in stage_names)
             )
+        msg += (
+            f"\nUse `dvc remove {stages_str}` to stop tracking the overlapping output."
+        )
         super().__init__(msg)
         self.stages = stages
         self.output = output
@@ -57,9 +67,7 @@ class OutputNotFoundError(DvcException):
         self.output = output
         self.repo = repo
         super().__init__(
-            "Unable to find DVC file with output '{path}'".format(
-                path=relpath(self.output)
-            )
+            f"Unable to find DVC file with output {relpath(self.output)!r}"
         )
 
 
@@ -74,11 +82,7 @@ class StagePathAsOutputError(DvcException):
 
     def __init__(self, stage, output):
         assert isinstance(output, str)
-        super().__init__(
-            "{stage} is within an output '{output}' of another stage".format(
-                stage=stage, output=output
-            )
-        )
+        super().__init__(f"{stage} is within an output {output!r} of another stage")
 
 
 class CircularDependencyError(DvcException):
@@ -150,9 +154,7 @@ class CyclicGraphError(DvcException):
 class ConfirmRemoveError(DvcException):
     def __init__(self, path):
         super().__init__(
-            "unable to remove '{}' without a confirmation. Use `-f` to force.".format(
-                path
-            )
+            f"unable to remove {path!r} without a confirmation. Use `-f` to force."
         )
 
 
@@ -161,9 +163,7 @@ class InitError(DvcException):
 
 
 class ReproductionError(DvcException):
-    def __init__(self, name):
-        self.name = name
-        super().__init__(f"failed to reproduce '{name}'")
+    pass
 
 
 class BadMetricError(DvcException):
@@ -176,11 +176,6 @@ class BadMetricError(DvcException):
         )
 
 
-class RecursiveAddingWhileUsingFilename(DvcException):
-    def __init__(self):
-        super().__init__("cannot use `fname` with multiple targets or `-R|--recursive`")
-
-
 class OverlappingOutputPathsError(DvcException):
     def __init__(self, parent, overlapping_out, message):
         self.parent = parent
@@ -201,6 +196,18 @@ class ETagMismatchError(DvcException):
         )
 
 
+class FileExistsLocallyError(FileExistsError, DvcException):
+    def __init__(self, path, hint=None):
+        import os.path
+
+        self.path = path
+        hint = "" if hint is None else f". {hint}"
+        path_typ = "directory" if os.path.isdir(path) else "file"
+        msg = f"The {path_typ} '{path}' already exists locally{hint}"
+        super().__init__(msg)
+        self.errno = errno.EEXIST
+
+
 class FileMissingError(DvcException):
     def __init__(self, path, hint=None):
         self.path = path
@@ -286,21 +293,6 @@ class URLMissingError(DvcException):
         super().__init__(f"The path '{url}' does not exist")
 
 
-class RemoteCacheRequiredError(DvcException):
-    def __init__(self, scheme, fs_path):
-        super().__init__(
-            (
-                "Current operation was unsuccessful because '{}' requires "
-                "existing cache on '{}' remote. See {} for information on how "
-                "to set up remote cache."
-            ).format(
-                fs_path,
-                scheme,
-                format_link("https://man.dvc.org/config#cache"),
-            )
-        )
-
-
 class IsADirectoryError(DvcException):  # noqa,pylint:disable=redefined-builtin
     """Raised when a file operation is requested on a directory."""
 
@@ -333,14 +325,6 @@ class CacheLinkError(DvcException):
         self.fs_paths = fs_paths
 
 
-class CircularImportError(DvcException):
-    def __init__(self, dep, a, b):
-        super().__init__(
-            f"'{dep}' contains invalid circular import. "
-            f"DVC repo '{a}' already imports from '{b}'."
-        )
-
-
 class PrettyDvcException(DvcException):
     def __pretty_exc__(self, **kwargs):
         """Print prettier exception message."""

dvc/fs/__init__.py

@@ -1,3 +1,4 @@
+from typing import Optional
 from urllib.parse import urlparse
 
 from dvc_http import HTTPFileSystem, HTTPSFileSystem  # noqa: F401
@@ -18,7 +19,7 @@ from dvc_objects.fs import (  # noqa: F401
     system,
     utils,
 )
-from dvc_objects.fs.base import AnyFSPath, FileSystem  # noqa: F401
+from dvc_objects.fs.base import AnyFSPath, FileSystem  # noqa: F401, TCH001
 from dvc_objects.fs.errors import (  # noqa: F401
     AuthError,
     ConfigError,
@@ -48,18 +49,45 @@ known_implementations.update(
 # pylint: enable=unused-import
 
 
-def download(fs, fs_path, to, jobs=None):
+def download(fs: "FileSystem", fs_path: str, to: str, jobs: Optional[int] = None):
     with Callback.as_tqdm_callback(
         desc=f"Downloading {fs.path.name(fs_path)}",
         unit="files",
     ) as cb:
-        fs.get(fs_path, to.fs_path, batch_size=jobs, callback=cb)
+        # NOTE: We use dvc-objects generic.copy over fs.get since it makes file
+        # download atomic and avoids fsspec glob/regex path expansion.
+        if fs.isdir(fs_path):
+            from_infos = [
+                path
+                for path in fs.find(fs_path)
+                if not path.endswith(fs.path.flavour.sep)
+            ]
+            if not from_infos:
+                return localfs.makedirs(to, exist_ok=True)
+            to_infos = [
+                localfs.path.join(to, *fs.path.relparts(info, fs_path))
+                for info in from_infos
+            ]
+        else:
+            from_infos = [fs_path]
+            to_infos = [to]
+
+        cb.set_size(len(from_infos))
+        jobs = jobs or fs.jobs
+        generic.copy(
+            fs,
+            from_infos,
+            localfs,
+            to_infos,
+            callback=cb,
+            batch_size=jobs,
+        )
 
 
 def parse_external_url(url, config=None):
     remote_config = dict(config) if config else {}
     remote_config["url"] = url
-    fs_cls, fs_config, fs_path = get_cloud_fs(None, **remote_config)
+    fs_cls, fs_config, fs_path = get_cloud_fs({}, **remote_config)
     fs = fs_cls(**fs_config)
     return fs, fs_path
 
@@ -105,18 +133,14 @@ def _resolve_remote_refs(config, remote_conf):
         return remote_conf
 
     base = get_fs_config(config, name=parsed.netloc)
-    cls, _, _ = _get_cloud_fs(config, **base)
+    cls, _, _ = get_cloud_fs(config, **base)
     relpath = parsed.path.lstrip("/").replace("/", cls.sep)
     url = cls.sep.join((base["url"], relpath))
     return {**base, **remote_conf, "url": url}
 
 
-def get_cloud_fs(repo, **kwargs):
-    repo_config = repo.config if repo else {}
-    return _get_cloud_fs(repo_config, **kwargs)
-
-
-def _get_cloud_fs(repo_config, **kwargs):
+def get_cloud_fs(repo_config, **kwargs):
+    repo_config = repo_config or {}
     core_config = repo_config.get("core", {})
 
     remote_conf = get_fs_config(repo_config, **kwargs)

dvc/fs/callbacks.py

@@ -2,12 +2,9 @@
 from contextlib import ExitStack
 from typing import TYPE_CHECKING, Any, BinaryIO, Dict, Optional, Union
 
+from dvc.progress import Tqdm
 from dvc.utils.objects import cached_property
-from dvc_objects.fs.callbacks import (  # noqa: F401
-    DEFAULT_CALLBACK,
-    Callback,
-    TqdmCallback,
-)
+from dvc_objects.fs.callbacks import DEFAULT_CALLBACK, Callback  # noqa: F401
 
 if TYPE_CHECKING:
     from rich.progress import TaskID
@@ -15,6 +12,59 @@ if TYPE_CHECKING:
     from dvc.ui._rich_progress import RichTransferProgress
 
 
+# NOTE: this is very similar to dvc-objects.fs.callbacks.TqdmCallback,
+# but it works with our own Tqdm instance.
+class TqdmCallback(Callback):
+    def __init__(
+        self,
+        size: Optional[int] = None,
+        value: int = 0,
+        progress_bar: Optional["Tqdm"] = None,
+        **tqdm_kwargs,
+    ):
+        tqdm_kwargs["total"] = size or -1
+        self._tqdm_kwargs = tqdm_kwargs
+        self._progress_bar = progress_bar
+        self._stack = ExitStack()
+        super().__init__(size=size, value=value)
+
+    @cached_property
+    def progress_bar(self):
+        progress_bar = (
+            self._progress_bar
+            if self._progress_bar is not None
+            else Tqdm(**self._tqdm_kwargs)
+        )
+        return self._stack.enter_context(progress_bar)
+
+    def __enter__(self):
+        return self
+
+    def close(self):
+        self._stack.close()
+
+    def set_size(self, size):
+        # Tqdm tries to be smart when to refresh,
+        # so we try to force it to re-render.
+        super().set_size(size)
+        self.progress_bar.refresh()
+
+    def call(self, hook_name=None, **kwargs):  # noqa: ARG002
+        self.progress_bar.update_to(self.value, total=self.size)
+
+    def branch(
+        self,
+        path_1: "Union[str, BinaryIO]",
+        path_2: str,
+        kwargs: Dict[str, Any],
+        child: Optional[Callback] = None,
+    ):
+        child = child or TqdmCallback(
+            bytes=True, desc=path_1 if isinstance(path_1, str) else path_2
+        )
+        return super().branch(path_1, path_2, kwargs, child=child)
+
+
 class RichCallback(Callback):
     def __init__(
         self,

dvc/fs/dvc.py

@@ -5,7 +5,7 @@ import ntpath
 import os
 import posixpath
 import threading
-from contextlib import suppress
+from contextlib import ExitStack, suppress
 from typing import TYPE_CHECKING, Any, Callable, Dict, Optional, Tuple, Type, Union
 
 from fsspec.spec import AbstractFileSystem
@@ -38,17 +38,24 @@ def _is_dvc_file(fname):
     return is_valid_filename(fname) or fname == DvcIgnore.DVCIGNORE_FILE
 
 
-def _merge_info(repo, fs_info, dvc_info):
+def _merge_info(repo, key, fs_info, dvc_info):
     from . import utils
 
     ret = {"repo": repo}
 
     if dvc_info:
+        dvc_info["isout"] = any(
+            (len(out_key) <= len(key) and key[: len(out_key)] == out_key)
+            for out_key in repo.index.data_keys["repo"]
+        )
+        dvc_info["isdvc"] = dvc_info["isout"]
         ret["dvc_info"] = dvc_info
         ret["type"] = dvc_info["type"]
         ret["size"] = dvc_info["size"]
         if not fs_info and "md5" in dvc_info:
             ret["md5"] = dvc_info["md5"]
+        if not fs_info and "md5-dos2unix" in dvc_info:
+            ret["md5-dos2unix"] = dvc_info["md5-dos2unix"]
 
     if fs_info:
         ret["type"] = fs_info["type"]
@@ -116,11 +123,13 @@ class _DVCFileSystem(AbstractFileSystem):  # pylint:disable=abstract-method
         from pygtrie import Trie
 
         super().__init__()
+        self._repo_stack = ExitStack()
         if repo is None:
             repo = self._make_repo(url=url, rev=rev, subrepos=subrepos, **repo_kwargs)
             assert repo is not None
             # pylint: disable=protected-access
             repo_factory = repo._fs_conf["repo_factory"]
+            self._repo_stack.enter_context(repo)
 
         if not repo_factory:
             from dvc.repo import Repo
@@ -209,6 +218,7 @@ class _DVCFileSystem(AbstractFileSystem):  # pylint:disable=abstract-method
                     scm=self.repo.scm,
                     repo_factory=self.repo_factory,
                 )
+                self._repo_stack.enter_context(repo)
                 self._datafss[key] = DataFileSystem(index=repo.index.data["repo"])
             self._subrepos_trie[key] = repo
 
@@ -251,33 +261,39 @@ class _DVCFileSystem(AbstractFileSystem):  # pylint:disable=abstract-method
         try:
             return self.repo.fs.open(fs_path, mode=mode)
         except FileNotFoundError:
-            _, dvc_fs, subkey = self._get_subrepo_info(key)
+            repo, dvc_fs, subkey = self._get_subrepo_info(key)
             if not dvc_fs:
                 raise
 
         dvc_path = _get_dvc_path(dvc_fs, subkey)
-        return dvc_fs.open(dvc_path, mode=mode)
+        kw = {}
+        if kwargs.get("cache_remote_stream", False):
+            kw["cache_odb"] = repo.cache.local
+        return dvc_fs.open(dvc_path, mode=mode, **kw)
 
     def isdvc(self, path, **kwargs) -> bool:
         """Is this entry dvc-tracked?"""
-        key = self._get_key_from_relative(path)
-        _, dvc_fs, subkey = self._get_subrepo_info(key)
-        dvc_path = _get_dvc_path(dvc_fs, subkey)
-        return dvc_fs is not None and dvc_fs.isdvc(dvc_path, **kwargs)
+        try:
+            return self.info(path).get("dvc_info", {}).get("isout", False)
+        except FileNotFoundError:
+            return False
 
-    def ls(  # pylint: disable=arguments-differ
+    def ls(  # pylint: disable=arguments-differ # noqa: C901
         self, path, detail=True, dvc_only=False, **kwargs
     ):
         key = self._get_key_from_relative(path)
         repo, dvc_fs, subkey = self._get_subrepo_info(key)
 
+        dvc_exists = False
         dvc_infos = {}
         if dvc_fs:
-            with suppress(FileNotFoundError):
-                dvc_path = _get_dvc_path(dvc_fs, subkey)
+            dvc_path = _get_dvc_path(dvc_fs, subkey)
+            with suppress(FileNotFoundError, NotADirectoryError):
                 for info in dvc_fs.ls(dvc_path, detail=True):
                     dvc_infos[dvc_fs.path.name(info["name"])] = info
+            dvc_exists = bool(dvc_infos) or dvc_fs.exists(dvc_path)
 
+        fs_exists = False
         fs_infos = {}
         ignore_subrepos = kwargs.get("ignore_subrepos", True)
         if not dvc_only:
@@ -291,17 +307,26 @@ class _DVCFileSystem(AbstractFileSystem):  # pylint:disable=abstract-method
             except (FileNotFoundError, NotADirectoryError):
                 pass
 
+            fs_exists = bool(fs_infos) or fs.exists(fs_path)
+
         dvcfiles = kwargs.get("dvcfiles", False)
 
         infos = []
         paths = []
         names = set(dvc_infos.keys()) | set(fs_infos.keys())
+
+        if not names and (dvc_exists or fs_exists):
+            # broken symlink or TreeError
+            raise FileNotFoundError(errno.ENOENT, os.strerror(errno.ENOENT), path)
+
         for name in names:
             if not dvcfiles and _is_dvc_file(name):
                 continue
 
             entry_path = self.path.join(path, name)
-            info = _merge_info(repo, fs_infos.get(name), dvc_infos.get(name))
+            info = _merge_info(
+                repo, (*subkey, name), fs_infos.get(name), dvc_infos.get(name)
+            )
             info["name"] = entry_path
             infos.append(info)
             paths.append(entry_path)
@@ -357,7 +382,7 @@ class _DVCFileSystem(AbstractFileSystem):  # pylint:disable=abstract-method
         if not dvc_info and not fs_info:
             raise FileNotFoundError
 
-        info = _merge_info(repo, fs_info, dvc_info)
+        info = _merge_info(repo, subkey, fs_info, dvc_info)
         info["name"] = path
         return info
 
@@ -374,6 +399,9 @@ class _DVCFileSystem(AbstractFileSystem):  # pylint:disable=abstract-method
         dvc_path = _get_dvc_path(dvc_fs, subkey)
         return dvc_fs.get_file(dvc_path, lpath, **kwargs)
 
+    def close(self):
+        self._repo_stack.close()
+
 
 class DVCFileSystem(FileSystem):
     protocol = "local"
@@ -384,7 +412,7 @@ class DVCFileSystem(FileSystem):
 
     @functools.cached_property
     # pylint: disable-next=invalid-overridden-method
-    def fs(self) -> "DVCFileSystem":
+    def fs(self) -> "_DVCFileSystem":
         return _DVCFileSystem(**self.fs_args)
 
     def isdvc(self, path, **kwargs) -> bool:
@@ -407,3 +435,7 @@ class DVCFileSystem(FileSystem):
             path = os.path.relpath(path, self.repo.root_dir)
 
         return as_posix(path)
+
+    def close(self):
+        if "fs" in self.__dict__:
+            self.fs.close()

dvc/info.py

@@ -6,13 +6,12 @@ import platform
 
 import psutil
 
-from dvc import __version__
+from dvc import PKG, __version__
 from dvc.exceptions import NotDvcRepoError
 from dvc.fs import Schemes, generic, get_fs_cls, get_fs_config, registry
 from dvc.repo import Repo
 from dvc.scm import SCMError
 from dvc.utils import error_link
-from dvc.utils.pkg import PKG
 
 SUBPROJECTS = (
     "dvc_data",
@@ -32,6 +31,7 @@ def get_dvc_info():
         f"Platform: Python {platform.python_version()} on {platform.platform()}",
         f"Subprojects:{_get_subprojects()}",
         f"Supports:{_get_supported_remotes()}",
+        f"Config:{_get_config_dirs()}",
     ]
 
     try:
@@ -42,7 +42,7 @@ def get_dvc_info():
             # `dvc config cache.shared group`.
             if os.path.exists(repo.cache.local.path):
                 info.append(f"Cache types: {_get_linktype_support_info(repo)}")
-                fs_type = get_fs_type(repo.cache.local.path)
+                fs_type = _get_fs_type(repo.cache.local.path)
                 info.append(f"Cache directory: {fs_type}")
             else:
                 info.append("Cache types: " + error_link("no-dvc-cache"))
@@ -51,7 +51,7 @@ def get_dvc_info():
             info.append(f"Remotes: {_get_remotes(repo.config)}")
 
             root_directory = repo.root_dir
-            fs_root = get_fs_type(os.path.abspath(root_directory))
+            fs_root = _get_fs_type(os.path.abspath(root_directory))
             info.append(f"Workspace directory: {fs_root}")
             info.append(f"Repo: {_get_dvc_repo_info(repo)}")
             info.append(f"Repo.site_cache_dir: {repo.site_cache_dir}")
@@ -67,7 +67,7 @@ def _get_caches(cache):
     caches = (
         cache_type
         for cache_type, cache_instance in cache.by_scheme()
-        if cache_instance and cache_type != "repo"
+        if cache_instance and cache_type not in ("repo", "legacy")
     )
 
     # Caches will be always non-empty including the local cache
@@ -136,10 +136,21 @@ def _get_supported_remotes():
     return "\n\t" + ",\n\t".join(supported_remotes)
 
 
-def get_fs_type(path):
+def _get_config_dirs():
+    from dvc.config import Config
+
+    dirs = [
+        f"Global: {Config.get_dir('global')}",
+        f"System: {Config.get_dir('system')}",
+    ]
+
+    return "\n\t" + "\n\t".join(dirs)
+
+
+def _get_fs_type(path):
     partition = {}
     for part in psutil.disk_partitions(all=True):
-        if part.fstype != "":
+        if part.fstype:
             try:
                 mountpoint = pathlib.Path(part.mountpoint).resolve()
                 partition[mountpoint] = part.fstype + " on " + part.device
@@ -155,11 +166,11 @@ def get_fs_type(path):
     return ("unknown", "none")
 
 
-def _get_dvc_repo_info(self):
-    if self.config.get("core", {}).get("no_scm", False):
+def _get_dvc_repo_info(repo):
+    if repo.config.get("core", {}).get("no_scm", False):
         return "dvc (no_scm)"
 
-    if self.root_dir != self.scm.root_dir:
+    if repo.root_dir != repo.scm.root_dir:
         return "dvc (subdir), git"
 
     return "dvc, git"

dvc/lock.py

@@ -187,7 +187,9 @@ class HardlinkLock(flufl.lock.Lock, LockBase):
 
         if self._tmp_dir is not None:
             # Under Windows file path length is limited so we hash it
-            hasher = hashlib.md5(self._claimfile.encode())  # noqa: S324
+            hasher = hashlib.md5(  # nosec B324, B303  # noqa: S324
+                self._claimfile.encode()
+            )
             filename = hasher.hexdigest()
             self._claimfile = os.path.join(self._tmp_dir, filename + ".lock")
 

dvc/logger.py

@@ -3,10 +3,12 @@
 import logging
 import logging.config
 import logging.handlers
+import os
 import sys
 
 import colorama
 
+from dvc.env import DVC_SHOW_TRACEBACK
 from dvc.progress import Tqdm
 
 
@@ -54,7 +56,7 @@ def add_logging_level(level_name, level_num, method_name=None):
 
 class LoggingException(Exception):
     def __init__(self, record):
-        msg = f"failed to log {str(record)}"
+        msg = f"failed to log {record!s}"
         super().__init__(msg)
 
 
@@ -86,9 +88,10 @@ class ColorFormatter(logging.Formatter):
         "CRITICAL": colorama.Fore.RED,
     }
 
-    def __init__(self, log_colors: bool = True) -> None:
+    def __init__(self, log_colors: bool = True, show_traceback: bool = False) -> None:
         super().__init__()
         self.log_colors = log_colors
+        self.show_traceback = show_traceback
 
     def format(self, record) -> str:  # noqa: A003, C901
         record.message = record.getMessage()
@@ -106,8 +109,10 @@ class ColorFormatter(logging.Formatter):
             msg = msg + sep + cause
 
         asctime = ""
-        if _is_verbose():
+        verbose = _is_verbose()
+        if verbose:
             asctime = self.formatTime(record, self.datefmt)
+        if verbose or self.show_traceback:
             if ei and not record.exc_text:
                 record.exc_text = self.formatException(ei)
             if record.exc_text:
@@ -146,7 +151,8 @@ class LoggerHandler(logging.StreamHandler):
                         self.emit_pretty_exception(exc, verbose=_is_verbose())
                         if not _is_verbose():
                             return
-                    except Exception:  # noqa, pylint: disable=broad-except
+                    # pylint: disable-next=broad-except
+                    except Exception:  # noqa: BLE001, S110  # nosec B110
                         pass
 
             msg = self.format(record)
@@ -197,7 +203,10 @@ def setup(level: int = logging.INFO, log_colors: bool = True) -> None:
     console_trace.setFormatter(formatter)
     console_trace.addFilter(exclude_filter(logging.DEBUG))
 
-    err_formatter = ColorFormatter(log_colors=log_colors and sys.stderr.isatty())
+    show_traceback = bool(os.environ.get(DVC_SHOW_TRACEBACK))
+    err_formatter = ColorFormatter(
+        log_colors=log_colors and sys.stderr.isatty(), show_traceback=show_traceback
+    )
     console_errors = LoggerHandler(sys.stderr)
     console_errors.setLevel(logging.WARNING)
     console_errors.setFormatter(err_formatter)

dvc/main.py

@@ -1,2 +0,0 @@
-# TODO: remove in 3.0, kept for backward compatibility
-from .cli import main  # noqa: F401, pylint: disable=unused-import

dvc/output.py

@@ -1,10 +1,11 @@
+import errno
 import logging
 import os
 import posixpath
 from collections import defaultdict
 from contextlib import suppress
 from operator import itemgetter
-from typing import TYPE_CHECKING, Dict, List, Optional, Set, Tuple, Type
+from typing import TYPE_CHECKING, Dict, List, Optional, Set, Tuple, Type, Union
 from urllib.parse import urlparse
 
 from funcy import collecting, first, project
@@ -18,33 +19,33 @@ from dvc.exceptions import (
     ConfirmRemoveError,
     DvcException,
     MergeError,
-    RemoteCacheRequiredError,
 )
+from dvc.utils import format_link
 from dvc.utils.objects import cached_property
 from dvc_data.hashfile import check as ocheck
 from dvc_data.hashfile import load as oload
 from dvc_data.hashfile.build import build
 from dvc_data.hashfile.checkout import checkout
+from dvc_data.hashfile.db import HashFileDB, add_update_tree
+from dvc_data.hashfile.hash import DEFAULT_ALGORITHM
 from dvc_data.hashfile.hash_info import HashInfo
 from dvc_data.hashfile.istextfile import istextfile
 from dvc_data.hashfile.meta import Meta
 from dvc_data.hashfile.transfer import transfer as otransfer
-from dvc_data.hashfile.tree import Tree
+from dvc_data.hashfile.tree import Tree, du
 from dvc_objects.errors import ObjectFormatError
 
 from .annotations import ANNOTATION_FIELDS, ANNOTATION_SCHEMA, Annotation
 from .fs import LocalFileSystem, RemoteMissingDepsError, Schemes, get_cloud_fs
-from .fs.callbacks import DEFAULT_CALLBACK
+from .fs.callbacks import DEFAULT_CALLBACK, Callback, TqdmCallback
 from .utils import relpath
 from .utils.fs import path_isin
 
 if TYPE_CHECKING:
-    from dvc_data.hashfile.db import HashFileDB
     from dvc_data.hashfile.obj import HashFile
     from dvc_data.index import DataIndexKey
     from dvc_objects.db import ObjectDB
 
-    from .fs.callbacks import Callback
     from .ignore import DvcIgnoreFilter
 
 logger = logging.getLogger(__name__)
@@ -64,7 +65,7 @@ CASE_SENSITIVE_CHECKSUM_SCHEMA = Any(
 
 # NOTE: currently there are only 3 possible checksum names:
 #
-#    1) md5 (LOCAL, SSH);
+#    1) md5 (LOCAL, SSH) (actually DVC 2.x md5-dos2unix)
 #    2) etag (S3, GS, OSS, AZURE, HTTP);
 #    3) checksum (HDFS);
 #
@@ -73,7 +74,7 @@ CASE_SENSITIVE_CHECKSUM_SCHEMA = Any(
 HDFS_PARAM_CHECKSUM = "checksum"
 S3_PARAM_CHECKSUM = "etag"
 CHECKSUMS_SCHEMA = {
-    LocalFileSystem.PARAM_CHECKSUM: CHECKSUM_SCHEMA,
+    "md5": CHECKSUM_SCHEMA,  # DVC 2.x md5-dos2unix
     HDFS_PARAM_CHECKSUM: CHECKSUM_SCHEMA,
     S3_PARAM_CHECKSUM: CASE_SENSITIVE_CHECKSUM_SCHEMA,
 }
@@ -91,11 +92,11 @@ def loadd_from(stage, d_list):
         metric = d.pop(Output.PARAM_METRIC, False)
         plot = d.pop(Output.PARAM_PLOT, False)
         persist = d.pop(Output.PARAM_PERSIST, False)
-        checkpoint = d.pop(Output.PARAM_CHECKPOINT, False)
         remote = d.pop(Output.PARAM_REMOTE, None)
         annot = {field: d.pop(field, None) for field in ANNOTATION_FIELDS}
         files = d.pop(Output.PARAM_FILES, None)
         push = d.pop(Output.PARAM_PUSH, True)
+        hash_name = d.pop(Output.PARAM_HASH, None)
         ret.append(
             _get(
                 stage,
@@ -105,11 +106,11 @@ def loadd_from(stage, d_list):
                 metric=metric,
                 plot=plot,
                 persist=persist,
-                checkpoint=checkpoint,
                 remote=remote,
                 **annot,
                 files=files,
                 push=push,
+                hash_name=hash_name,
             )
         )
     return ret
@@ -122,7 +123,6 @@ def loads_from(
     metric=False,
     plot=False,
     persist=False,
-    checkpoint=False,
     remote=None,
     push=True,
 ):
@@ -135,7 +135,6 @@ def loads_from(
             metric=metric,
             plot=plot,
             persist=persist,
-            checkpoint=checkpoint,
             remote=remote,
             push=push,
         )
@@ -191,7 +190,6 @@ def load_from_pipeline(stage, data, typ="outs"):
             [
                 Output.PARAM_CACHE,
                 Output.PARAM_PERSIST,
-                Output.PARAM_CHECKPOINT,
                 Output.PARAM_REMOTE,
                 Output.PARAM_PUSH,
                 *ANNOTATION_FIELDS,
@@ -232,17 +230,29 @@ def merge_file_meta_from_cloud(entry: Dict) -> Dict:
     return entry
 
 
-def _serialize_tree_obj_to_files(obj: "Tree") -> List[Dict[str, Any]]:
+def _serialize_tree_obj_to_files(obj: Tree) -> List[Dict[str, Any]]:
     key = obj.PARAM_RELPATH
     return sorted(
         (
-            {key: posixpath.sep.join(parts), **hi.to_dict(), **meta.to_dict()}
+            {
+                key: posixpath.sep.join(parts),
+                **_serialize_hi_to_dict(hi),
+                **meta.to_dict(),
+            }
             for parts, meta, hi in obj
         ),
         key=itemgetter(key),
     )
 
 
+def _serialize_hi_to_dict(hash_info: Optional[HashInfo]) -> Dict[str, Any]:
+    if hash_info:
+        if hash_info.name == "md5-dos2unix":
+            return {"md5": hash_info.value}
+        return hash_info.to_dict()
+    return {}
+
+
 class OutputDoesNotExistError(DvcException):
     def __init__(self, path):
         msg = f"output '{path}' does not exist"
@@ -276,12 +286,16 @@ class OutputIsIgnoredError(DvcException):
         super().__init__(f"Path '{match.file}' is ignored by\n{lines}")
 
 
+class CheckoutCallback(TqdmCallback):
+    # disable branching for checkouts
+    branch = Callback.branch  # type: ignore[assignment]
+
+
 class Output:
     IS_DEPENDENCY = False
 
     PARAM_PATH = "path"
     PARAM_CACHE = "cache"
-    PARAM_CHECKPOINT = "checkpoint"
     PARAM_FILES = "files"
     PARAM_METRIC = "metric"
     PARAM_METRIC_TYPE = "type"
@@ -298,15 +312,7 @@ class Output:
     PARAM_REMOTE = "remote"
     PARAM_PUSH = "push"
     PARAM_CLOUD = "cloud"
-
-    METRIC_SCHEMA = Any(
-        None,
-        bool,
-        {
-            PARAM_METRIC_TYPE: Any(str, None),
-            PARAM_METRIC_XPATH: Any(str, None),
-        },
-    )
+    PARAM_HASH = "hash"
 
     DoesNotExistError: Type[DvcException] = OutputDoesNotExistError
     IsNotFileOrDirError: Type[DvcException] = OutputIsNotFileOrDirError
@@ -322,7 +328,6 @@ class Output:
         metric=False,
         plot=False,
         persist=False,
-        checkpoint=False,
         desc=None,
         type=None,  # noqa: A002, pylint: disable=redefined-builtin
         labels=None,
@@ -332,6 +337,7 @@ class Output:
         fs_config=None,
         files: Optional[List[Dict[str, Any]]] = None,
         push: bool = True,
+        hash_name: Optional[str] = DEFAULT_ALGORITHM,
     ):
         self.annot = Annotation(
             desc=desc, type=type, labels=labels or [], meta=meta or {}
@@ -348,7 +354,11 @@ class Output:
         if fs_config is not None:
             fs_kwargs.update(**fs_config)
 
-        fs_cls, fs_config, fs_path = get_cloud_fs(self.repo, url=path, **fs_kwargs)
+        fs_cls, fs_config, fs_path = get_cloud_fs(
+            self.repo.config if self.repo else {},
+            url=path,
+            **fs_kwargs,
+        )
         self.fs = fs_cls(**fs_config)
 
         if (
@@ -389,7 +399,6 @@ class Output:
         self.metric = False if self.IS_DEPENDENCY else metric
         self.plot = False if self.IS_DEPENDENCY else plot
         self.persist = persist
-        self.checkpoint = checkpoint
         self.can_push = push
 
         self.fs_path = self._parse_path(self.fs, fs_path)
@@ -404,21 +413,32 @@ class Output:
             )
             self.meta.version_id = version_id
 
-        if self.is_in_repo:
-            self.hash_name = "md5"
-        else:
-            self.hash_name = self.fs.PARAM_CHECKSUM
-
-        self.hash_info = HashInfo(
-            name=self.hash_name,
-            value=getattr(self.meta, self.hash_name, None),
-        )
+        self.hash_name, self.hash_info = self._compute_hash_info_from_meta(hash_name)
         self._compute_meta_hash_info_from_files()
 
+    def _compute_hash_info_from_meta(
+        self, hash_name: Optional[str]
+    ) -> Tuple[str, HashInfo]:
+        if self.is_in_repo:
+            if hash_name is None:
+                # Legacy 2.x output, use "md5-dos2unix" but read "md5" from
+                # file meta
+                hash_name = "md5-dos2unix"
+                meta_name = "md5"
+            else:
+                meta_name = hash_name
+        else:
+            hash_name = meta_name = self.fs.PARAM_CHECKSUM
+        assert hash_name
+
+        hash_info = HashInfo(
+            name=hash_name,
+            value=getattr(self.meta, meta_name, None),
+        )
+        return hash_name, hash_info
+
     def _compute_meta_hash_info_from_files(self) -> None:
         if self.files:
-            from dvc_data.hashfile.db import HashFileDB
-
             tree = Tree.from_list(self.files, hash_name=self.hash_name)
             tree.digest(with_meta=True)
             self.odb = HashFileDB(tree.fs, tree.path + ".odb")
@@ -427,11 +447,11 @@ class Output:
             self.hash_info = tree.hash_info
             self.meta.isdir = True
             self.meta.nfiles = len(self.files)
-            self.meta.size = sum(f.get("size") for f in self.files)
+            self.meta.size = sum(filter(None, (f.get("size") for f in self.files)))
             self.meta.remote = first(f.get("remote") for f in self.files)
         elif self.meta.nfiles or self.hash_info and self.hash_info.isdir:
             self.meta.isdir = True
-            if not self.hash_info and self.hash_name != "md5":
+            if not self.hash_info and self.hash_name not in ("md5", "md5-dos2unix"):
                 md5 = getattr(self.meta, "md5", None)
                 if md5:
                     self.hash_info = HashInfo("md5", md5)
@@ -455,9 +475,7 @@ class Output:
         return fs.path.abspath(fs.path.normpath(fs_path))
 
     def __repr__(self):
-        return "{class_name}: '{def_path}'".format(
-            class_name=type(self).__name__, def_path=self.def_path
-        )
+        return f"{type(self).__name__}: {self.def_path!r}"
 
     def __str__(self):
         if self.fs.protocol != "local":
@@ -495,7 +513,7 @@ class Output:
             return False
 
         return self.repo and self.fs.path.isin(
-            self.fs.path.realpath(self.fs_path),
+            self.fs_path,
             self.repo.root_dir,
         )
 
@@ -508,11 +526,19 @@ class Output:
 
     @property
     def cache(self):
-        odb_name = "repo" if self.is_in_repo else self.protocol
-        odb = getattr(self.repo.cache, odb_name)
-        if self.use_cache and odb is None:
-            raise RemoteCacheRequiredError(self.fs.protocol, self.fs_path)
-        return odb
+        from dvc.cachemgr import LEGACY_HASH_NAMES
+
+        assert self.is_in_repo
+        odb_name = "legacy" if self.hash_name in LEGACY_HASH_NAMES else "repo"
+        return getattr(self.repo.cache, odb_name)
+
+    @property
+    def local_cache(self):
+        from dvc.cachemgr import LEGACY_HASH_NAMES
+
+        if self.hash_name in LEGACY_HASH_NAMES:
+            return self.repo.cache.legacy
+        return self.repo.cache.local
 
     @property
     def cache_path(self):
@@ -524,12 +550,24 @@ class Output:
         _, hash_info = self._get_hash_meta()
         return hash_info
 
+    def _build(
+        self, *args, no_progress_bar=False, **kwargs
+    ) -> Tuple["HashFileDB", "Meta", "HashFile"]:
+        from dvc.ui import ui
+
+        with ui.progress(
+            unit="file",
+            desc=f"Collecting files and computing hashes in {self}",
+            disable=no_progress_bar,
+        ) as pb:
+            return build(*args, callback=pb.as_callback(), **kwargs)
+
     def _get_hash_meta(self):
         if self.use_cache:
             odb = self.cache
         else:
-            odb = self.repo.cache.local
-        _, meta, obj = build(
+            odb = self.local_cache
+        _, meta, obj = self._build(
             odb,
             self.fs_path,
             self.fs,
@@ -655,6 +693,14 @@ class Output:
     # pylint: enable=no-member
 
     def save(self) -> None:
+        if self.use_cache and not self.is_in_repo:
+            raise DvcException(
+                f"Saving cached external output {self!s} is not supported "
+                "since DVC 3.0. See "
+                f"{format_link('https://dvc.org/doc/user-guide/upgrade')} "
+                "for more info."
+            )
+
         if not self.exists:
             raise self.DoesNotExistError(self)
 
@@ -669,8 +715,9 @@ class Output:
         if self.metric:
             self.verify_metric()
 
+        self._update_legacy_hash_name()
         if self.use_cache:
-            _, self.meta, self.obj = build(
+            _, self.meta, self.obj = self._build(
                 self.cache,
                 self.fs_path,
                 self.fs,
@@ -678,8 +725,8 @@ class Output:
                 ignore=self.dvcignore,
             )
         else:
-            _, self.meta, self.obj = build(
-                self.repo.cache.local,
+            _, self.meta, self.obj = self._build(
+                self.local_cache,
                 self.fs_path,
                 self.fs,
                 self.hash_name,
@@ -692,6 +739,10 @@ class Output:
         self.hash_info = self.obj.hash_info
         self.files = None
 
+    def _update_legacy_hash_name(self):
+        if self.hash_name == "md5-dos2unix" and self.changed_checksum():
+            self.hash_name = "md5"
+
     def set_exec(self) -> None:
         if self.isfile() and self.meta.isexec:
             self.cache.set_exec(self.fs_path)
@@ -726,7 +777,7 @@ class Output:
             if granular:
                 obj = self._commit_granular_dir(filter_info, hardlink)
             else:
-                staging, _, obj = build(
+                staging, _, obj = self._build(
                     self.cache,
                     filter_info or self.fs_path,
                     self.fs,
@@ -741,20 +792,23 @@ class Output:
                     hardlink=hardlink,
                 )
             if relink:
-                self._checkout(
-                    filter_info or self.fs_path,
-                    self.fs,
-                    obj,
-                    self.cache,
-                    relink=True,
-                    state=self.repo.state,
-                    prompt=prompt.confirm,
-                )
+                rel = self.fs.path.relpath(filter_info or self.fs_path)
+                with CheckoutCallback(desc=f"Checking out {rel}", unit="files") as cb:
+                    self._checkout(
+                        filter_info or self.fs_path,
+                        self.fs,
+                        obj,
+                        self.cache,
+                        relink=True,
+                        state=self.repo.state,
+                        prompt=prompt.confirm,
+                        progress_callback=cb,
+                    )
                 self.set_exec()
 
     def _commit_granular_dir(self, filter_info, hardlink) -> Optional["HashFile"]:
         prefix = self.fs.path.parts(self.fs.path.relpath(filter_info, self.fs_path))
-        staging, _, obj = build(
+        staging, _, obj = self._build(
             self.cache,
             self.fs_path,
             self.fs,
@@ -775,6 +829,8 @@ class Output:
         return checkout_obj
 
     def dumpd(self, **kwargs):  # noqa: C901, PLR0912
+        from dvc.cachemgr import LEGACY_HASH_NAMES
+
         ret: Dict[str, Any] = {}
         with_files = (
             (not self.IS_DEPENDENCY or self.stage.is_import)
@@ -785,7 +841,12 @@ class Output:
         if not with_files:
             meta_d = self.meta.to_dict()
             meta_d.pop("isdir", None)
-            ret.update(self.hash_info.to_dict())
+            if self.hash_name in LEGACY_HASH_NAMES:
+                # 2.x checksums get serialized with file meta
+                name = "md5" if self.hash_name == "md5-dos2unix" else self.hash_name
+                ret.update({name: self.hash_info.value})
+            else:
+                ret.update(self.hash_info.to_dict())
             ret.update(split_file_meta_from_cloud(meta_d))
 
         if self.is_in_repo:
@@ -793,6 +854,9 @@ class Output:
         else:
             path = self.def_path
 
+        if self.hash_name not in LEGACY_HASH_NAMES:
+            ret[self.PARAM_HASH] = "md5"
+
         ret[self.PARAM_PATH] = path
 
         if not self.IS_DEPENDENCY:
@@ -816,9 +880,6 @@ class Output:
             if self.persist:
                 ret[self.PARAM_PERSIST] = self.persist
 
-            if self.checkpoint:
-                ret[self.PARAM_CHECKPOINT] = self.checkpoint
-
             if self.remote:
                 ret[self.PARAM_REMOTE] = self.remote
 
@@ -888,12 +949,18 @@ class Output:
         relink: bool = False,
         filter_info: Optional[str] = None,
         allow_missing: bool = False,
-        checkpoint_reset: bool = False,
         **kwargs,
     ) -> Optional[Tuple[bool, Optional[bool]]]:
+        # callback passed act as a aggregate callback.
+        # do not let checkout to call set_size and change progressbar.
+        class CallbackProxy(Callback):
+            def relative_update(self, inc: int = 1) -> None:
+                progress_callback.relative_update(inc)
+                return super().relative_update(inc)
+
+        callback = CallbackProxy()
         if not self.use_cache:
-            if progress_callback != DEFAULT_CALLBACK:
-                progress_callback.relative_update(self.get_files_number(filter_info))
+            callback.relative_update(self.get_files_number(filter_info))
             return None
 
         obj = self.get_obj(filter_info=filter_info)
@@ -901,11 +968,6 @@ class Output:
             # backward compatibility
             return None
 
-        if self.checkpoint and checkpoint_reset:
-            if self.exists:
-                self.remove()
-            return None
-
         added = not self.exists
 
         try:
@@ -915,21 +977,24 @@ class Output:
                 obj,
                 self.cache,
                 force=force,
-                progress_callback=progress_callback,
+                progress_callback=callback,
                 relink=relink,
                 state=self.repo.state,
                 prompt=prompt.confirm,
                 **kwargs,
             )
         except CheckoutError:
-            if allow_missing or self.checkpoint:
+            if allow_missing:
                 return None
             raise
         self.set_exec()
         return added, False if added else modified
 
     def remove(self, ignore_remove=False):
-        self.fs.remove(self.fs_path, recursive=True)
+        try:
+            self.fs.remove(self.fs_path, recursive=True)
+        except FileNotFoundError:
+            pass
         if self.protocol != Schemes.LOCAL:
             return
 
@@ -956,7 +1021,9 @@ class Output:
         if odb is None:
             odb = self.cache
 
-        cls, config, from_info = get_cloud_fs(self.repo, url=source)
+        cls, config, from_info = get_cloud_fs(
+            self.repo.config if self.repo else {}, url=source
+        )
         from_fs = cls(**config)
 
         # When running import-url --to-remote / add --to-remote/-o ... we
@@ -970,11 +1037,11 @@ class Output:
 
         upload = not (update and from_fs.isdir(from_info))
         jobs = jobs or min((from_fs.jobs, odb.fs.jobs))
-        staging, self.meta, obj = build(
+        staging, self.meta, obj = self._build(
             odb,
             from_info,
             from_fs,
-            "md5",
+            DEFAULT_ALGORITHM,
             upload=upload,
             no_progress_bar=no_progress_bar,
         )
@@ -1008,7 +1075,7 @@ class Output:
         if self.exists:
             self.cache.unprotect(self.fs_path)
 
-    def get_dir_cache(self, **kwargs):
+    def get_dir_cache(self, **kwargs) -> Optional["Tree"]:
         if not self.is_dir_checksum:
             raise DvcException("cannot get dir cache for file checksum")
 
@@ -1022,14 +1089,17 @@ class Output:
                 self.repo.cloud.pull([obj.hash_info], **kwargs)
 
         if self.obj:
+            assert isinstance(self.obj, Tree)
             return self.obj
 
         try:
-            self.obj = oload(self.cache, self.hash_info)
+            obj = oload(self.cache, self.hash_info)
+            assert isinstance(obj, Tree)
         except (FileNotFoundError, ObjectFormatError):
-            self.obj = None
+            obj = None
 
-        return self.obj
+        self.obj = obj
+        return obj
 
     def _collect_used_dir_cache(
         self, remote=None, force=False, jobs=None, filter_info=None
@@ -1066,7 +1136,7 @@ class Output:
             return obj.filter(prefix)
         return obj
 
-    def get_used_objs(  # noqa: C901, PLR0911
+    def get_used_objs(  # noqa: C901
         self, **kwargs
     ) -> Dict[Optional["ObjectDB"], Set["HashInfo"]]:
         """Return filtered set of used object IDs for this out."""
@@ -1076,9 +1146,7 @@ class Output:
 
         push: bool = kwargs.pop("push", False)
         if self.stage.is_repo_import:
-            if push:
-                return {}
-            return self.get_used_external(**kwargs)
+            return {}
 
         if push and not self.can_push:
             return {}
@@ -1114,7 +1182,9 @@ class Output:
             return {}
 
         if self.remote:
-            remote = self.repo.cloud.get_remote_odb(name=self.remote)
+            remote = self.repo.cloud.get_remote_odb(
+                name=self.remote, hash_name=self.hash_name
+            )
         else:
             remote = None
 
@@ -1130,15 +1200,6 @@ class Output:
                 oids.add(oid)
         return oids
 
-    def get_used_external(
-        self, **kwargs
-    ) -> Dict[Optional["ObjectDB"], Set["HashInfo"]]:
-        if not self.use_cache or not self.stage.is_repo_import:
-            return {}
-
-        (dep,) = self.stage.deps
-        return dep.get_used_objs(**kwargs)
-
     def _validate_output_path(self, path, stage=None):
         from dvc.dvcfile import is_valid_filename
 
@@ -1162,13 +1223,14 @@ class Output:
             self.hash_name,
             Meta.PARAM_SIZE,
             Meta.PARAM_NFILES,
+            Output.PARAM_HASH,
         ]
 
         for opt in ignored:
             my.pop(opt, None)
             other.pop(opt, None)
 
-        if my != other:
+        if my != other or self.hash_name != out.hash_name:
             raise MergeError("unable to auto-merge outputs with different options")
 
         if not out.is_dir_checksum:
@@ -1176,7 +1238,7 @@ class Output:
 
     def merge(self, ancestor, other, allowed=None):
         from dvc_data.hashfile.tree import MergeError as TreeMergeError
-        from dvc_data.hashfile.tree import du, merge
+        from dvc_data.hashfile.tree import merge
 
         assert other
 
@@ -1209,6 +1271,169 @@ class Output:
             nfiles=len(merged),
         )
 
+    def unstage(self, path: str) -> Tuple["Meta", "Tree"]:
+        from pygtrie import Trie
+
+        from dvc_objects.fs.path import Path
+
+        assert isinstance(self.fs.path, Path)
+        rel_key = tuple(self.fs.path.parts(self.fs.path.relpath(path, self.fs_path)))
+
+        if self.hash_info:
+            tree = self.get_dir_cache()
+            if tree is None:
+                raise DvcException(f"could not read {self.hash_info.value!r}")
+        else:
+            tree = Tree()
+
+        trie = tree.as_trie()
+        assert isinstance(trie, Trie)
+
+        try:
+            del trie[rel_key:]  # type: ignore[misc]
+        except KeyError:
+            raise FileNotFoundError(  # noqa: B904
+                errno.ENOENT,
+                os.strerror(errno.ENOENT),
+                path,
+            )
+
+        new = tree.from_trie(trie)
+        new.digest()
+        return Meta(nfiles=len(new), isdir=True), new
+
+    def apply(
+        self,
+        path: str,
+        obj: Union["Tree", "HashFile"],
+        meta: "Meta",
+    ) -> Tuple["Meta", "Tree"]:
+        from pygtrie import Trie
+
+        from dvc_objects.fs.path import Path
+
+        assert isinstance(self.fs.path, Path)
+        append_only = True
+        rel_key = tuple(self.fs.path.parts(self.fs.path.relpath(path, self.fs_path)))
+
+        if self.hash_info:
+            tree = self.get_dir_cache()
+            if tree is None:
+                raise DvcException(f"could not read {self.hash_info.value!r}")
+        else:
+            tree = Tree()
+
+        trie = tree.as_trie()
+        assert isinstance(trie, Trie)
+
+        try:
+            del trie[rel_key:]  # type: ignore[misc]
+        except KeyError:
+            pass
+        else:
+            append_only = False
+
+        items = {}
+        if isinstance(obj, Tree):
+            items = {(*rel_key, *key): (m, o) for key, m, o in obj}
+        else:
+            items = {rel_key: (meta, obj.hash_info)}
+        trie.update(items)
+
+        new = Tree.from_trie(trie)
+        new.digest()
+
+        size = self.meta.size if self.meta and self.meta.size else None
+        if append_only and size and meta.size is not None:
+            # if files were only appended, we can sum to the existing size
+            size += meta.size
+        elif self.hash_info and self.hash_info == new.hash_info:
+            # if hashes are same, sizes must have been the same
+            size = self.meta.size
+        else:
+            size = None
+
+        meta = Meta(nfiles=len(new), size=size, isdir=True)
+        return meta, new
+
+    def add(  # noqa: C901
+        self, path: Optional[str] = None, no_commit: bool = False, relink: bool = True
+    ) -> Optional["HashFile"]:
+        path = path or self.fs_path
+        if self.hash_info and not self.is_dir_checksum and self.fs_path != path:
+            raise DvcException(
+                f"Cannot modify '{self}' which is being tracked as a file"
+            )
+
+        assert self.repo
+        self._update_legacy_hash_name()
+        cache = self.cache if self.use_cache else self.local_cache
+        assert isinstance(cache, HashFileDB)
+
+        new: "HashFile"
+        try:
+            assert self.hash_name
+            staging, meta, obj = self._build(
+                cache,
+                path,
+                self.fs,
+                self.hash_name,
+                ignore=self.dvcignore,
+                dry_run=not self.use_cache,
+            )
+        except FileNotFoundError as exc:
+            if self.fs_path == path:
+                raise self.DoesNotExistError(self) from exc
+            if not self.is_dir_checksum:
+                raise
+
+            meta, new = self.unstage(path)
+            staging, obj = None, None
+        else:
+            assert obj
+            assert staging
+            if self.fs_path != path:
+                meta, new = self.apply(path, obj, meta)
+                add_update_tree(staging, new)
+            else:
+                new = obj
+
+        self.obj = new
+        self.hash_info = self.obj.hash_info
+        self.meta = meta
+        self.files = None
+        self.ignore()
+
+        if no_commit or not self.use_cache:
+            return obj
+
+        if isinstance(new, Tree):
+            add_update_tree(cache, new)
+
+        if not obj:
+            return obj
+
+        assert staging
+        assert obj.hash_info
+        otransfer(staging, self.cache, {obj.hash_info}, hardlink=relink, shallow=False)
+
+        if relink:
+            with CheckoutCallback(
+                desc=f"Checking out {path}", unit="files"
+            ) as callback:
+                self._checkout(
+                    path,
+                    self.fs,
+                    obj,
+                    self.cache,
+                    relink=True,
+                    state=self.repo.state,
+                    prompt=prompt.confirm,
+                    progress_callback=callback,
+                )
+            self.set_exec()
+        return obj
+
     @property
     def fspath(self):
         return self.fs_path
@@ -1268,10 +1493,9 @@ ARTIFACT_SCHEMA = {
     **CHECKSUMS_SCHEMA,
     **META_SCHEMA,
     Required(Output.PARAM_PATH): str,
-    Output.PARAM_PLOT: bool,
     Output.PARAM_PERSIST: bool,
-    Output.PARAM_CHECKPOINT: bool,
     Output.PARAM_CLOUD: CLOUD_SCHEMA,
+    Output.PARAM_HASH: str,
 }
 
 DIR_FILES_SCHEMA: Dict[str, Any] = {
@@ -1285,7 +1509,6 @@ SCHEMA = {
     **ARTIFACT_SCHEMA,
     **ANNOTATION_SCHEMA,
     Output.PARAM_CACHE: bool,
-    Output.PARAM_METRIC: Output.METRIC_SCHEMA,
     Output.PARAM_REMOTE: str,
     Output.PARAM_PUSH: bool,
     Output.PARAM_FILES: [DIR_FILES_SCHEMA],

dvc/parsing/__init__.py

@@ -135,6 +135,7 @@ def make_definition(
 class DataResolver:
     def __init__(self, repo: "Repo", wdir: str, d: dict):
         self.fs = fs = repo.fs
+        self.parsing_config = repo.config.get("parsing", {})
 
         if os.path.isabs(wdir):
             wdir = fs.path.relpath(wdir)
@@ -301,7 +302,10 @@ class EntryDefinition:
     ) -> "DictStrAny":
         try:
             return context.resolve(
-                value, skip_interpolation_checks=skip_checks, key=key
+                value,
+                skip_interpolation_checks=skip_checks,
+                key=key,
+                config=self.resolver.parsing_config,
             )
         except (ParseError, KeyNotInContext) as exc:
             format_and_raise(exc, f"'{self.where}.{self.name}.{key}'", self.relpath)
@@ -392,7 +396,7 @@ class ForeachDefinition:
         """Convert sequence to Mapping with keys normalized."""
         iterable = self.resolved_iterable
         if isinstance(iterable, Mapping):
-            return iterable
+            return {to_str(k): v for k, v in iterable.items()}
 
         assert isinstance(iterable, Sequence)
         if any(map(is_map_or_seq, iterable)):

dvc/parsing/context.py

@@ -495,7 +495,12 @@ class Context(CtxDict):
                 self.data.pop(key, None)
 
     def resolve(
-        self, src, unwrap=True, skip_interpolation_checks=False, key=None
+        self,
+        src,
+        unwrap=True,
+        skip_interpolation_checks=False,
+        key=None,
+        config=None,
     ) -> Any:
         """Recursively resolves interpolation and returns resolved data.
 
@@ -511,10 +516,15 @@ class Context(CtxDict):
         {'lst': [1, 2, 3]}
         """
         func = recurse(self.resolve_str)
-        return func(src, unwrap, skip_interpolation_checks, key)
+        return func(src, unwrap, skip_interpolation_checks, key, config)
 
     def resolve_str(
-        self, src: str, unwrap=True, skip_interpolation_checks=False, key=None
+        self,
+        src: str,
+        unwrap=True,
+        skip_interpolation_checks=False,
+        key=None,
+        config=None,
     ) -> str:
         """Resolves interpolated string to it's original value,
         or in case of multiple interpolations, a combined string.
@@ -535,7 +545,12 @@ class Context(CtxDict):
             return value
         # but not "${num} days"
         return str_interpolate(
-            src, matches, self, skip_checks=skip_interpolation_checks, key=key
+            src,
+            matches,
+            self,
+            skip_checks=skip_interpolation_checks,
+            key=key,
+            config=config,
         )
 
 

dvc/parsing/interpolate.py

@@ -73,7 +73,7 @@ def embrace(s: str):
 
 def escape_str(value):
     if os.name == "nt":
-        from subprocess import list2cmdline
+        from subprocess import list2cmdline  # nosec B404
 
         return list2cmdline([value])
     from shlex import quote
@@ -82,20 +82,18 @@ def escape_str(value):
 
 
 @singledispatch
-def to_str(obj) -> str:
+def to_str(obj, config=None) -> str:  # noqa: ARG001, pylint: disable=unused-argument
     return str(obj)
 
 
 @to_str.register(bool)
-def _(obj: bool):
+def _(obj: bool, config=None):  # noqa: ARG001, pylint: disable=unused-argument
     return "true" if obj else "false"
 
 
 @to_str.register(dict)
-def _(obj: dict):  # noqa: C901
-    from dvc.config import Config
-
-    config = Config().get("parsing", {})
+def _(obj: dict, config=None):  # noqa: C901
+    config = config or {}
 
     result = ""
     for k, v in flatten(obj).items():
@@ -211,6 +209,7 @@ def str_interpolate(
     context: "Context",
     skip_checks: bool = False,
     key=None,
+    config=None,
 ):
     index, buf = 0, ""
     for match in matches:
@@ -218,7 +217,7 @@ def str_interpolate(
         expr = get_expression(match, skip_checks=skip_checks)
         value = context.select(expr, unwrap=True)
         validate_value(value, key)
-        buf += template[index:start] + to_str(value)
+        buf += template[index:start] + to_str(value, config=config)
         index = end
     buf += template[index:]
     # regex already backtracks and avoids any `${` starting with

dvc/parsing/versions.py

@@ -1,39 +0,0 @@
-import enum
-from collections.abc import Mapping
-
-from voluptuous import validators
-
-SCHEMA_KWD = "schema"
-META_KWD = "meta"
-
-
-def lockfile_version_schema(value):
-    expected = [LOCKFILE_VERSION.V2.value]  # pylint: disable=no-member
-    msg = f"invalid schema version {value}, expected one of {expected}"
-    return validators.Any(*expected, msg=msg)(value)
-
-
-class VersionEnum(str, enum.Enum):
-    @classmethod
-    def all_versions(cls):
-        return [v.value for v in cls]
-
-
-class LOCKFILE_VERSION(VersionEnum):  # noqa: N801
-    V1 = "1.0"
-    V2 = "2.0"
-
-    @classmethod
-    def from_dict(cls, data):
-        # 1) if it's empty or or is not a dict, use the latest one (V2).
-        # 2) use the `schema` identifier if it exists and is a supported
-        # version
-        # 3) if it's not in any of the supported version, use the latest one
-        # 4) if there's no identifier, it's a V1
-        if not data or not isinstance(data, Mapping):
-            return cls(cls.V2)
-
-        version = data.get(SCHEMA_KWD)
-        if version:
-            return cls(version if version in cls.all_versions() else cls.V2)
-        return cls(cls.V1)

dvc/progress.py

@@ -2,12 +2,16 @@
 import logging
 import sys
 from threading import RLock
+from typing import TYPE_CHECKING
 
 from tqdm import tqdm
 
 from dvc.env import DVC_IGNORE_ISATTY
 from dvc.utils import env2bool
 
+if TYPE_CHECKING:
+    from dvc.fs.callbacks import TqdmCallback
+
 logger = logging.getLogger(__name__)
 tqdm.set_lock(RLock())
 
@@ -158,3 +162,8 @@ class Tqdm(tqdm):
             d["ncols_desc"] = d["ncols_info"] = 1
             d["prefix"] = ""
         return d
+
+    def as_callback(self) -> "TqdmCallback":
+        from dvc.fs.callbacks import TqdmCallback
+
+        return TqdmCallback(progress_bar=self)

dvc/render/convert.py

@@ -1,4 +1,3 @@
-import json
 from collections import defaultdict
 from typing import Dict, List, Union
 
@@ -32,15 +31,17 @@ def to_json(renderer, split: bool = False) -> List[Dict]:
     if renderer.TYPE == "vega":
         grouped = _group_by_rev(renderer.datapoints)
         if split:
-            content = renderer.get_filled_template(skip_anchors=["data"])
+            content = renderer.get_filled_template(
+                skip_anchors=["data"], as_string=False
+            )
         else:
-            content = renderer.get_filled_template()
+            content = renderer.get_filled_template(as_string=False)
         if grouped:
             return [
                 {
                     TYPE_KEY: renderer.TYPE,
                     REVISIONS_KEY: sorted(grouped.keys()),
-                    "content": json.loads(content),
+                    "content": content,
                     "datapoints": grouped,
                 }
             ]

dvc/render/converter/vega.py

@@ -56,7 +56,6 @@ def _verify_field(file2datapoints: Dict[str, List], filename: str, field: str):
         datapoint = first(file2datapoints[filename])
         if field not in datapoint:
             raise FieldNotFoundError(field, datapoint.keys())
-    return
 
 
 def _get_xs(properties: Dict, file2datapoints: Dict[str, List[Dict]]):
@@ -245,7 +244,7 @@ class VegaConverter(Converter):
         for i, (y_file, y_field) in enumerate(ys):
             if num_xs > 1:
                 x_file, x_field = xs[i]
-            datapoints = [d.copy() for d in file2datapoints.get(y_file, [])]
+            datapoints = [{**d} for d in file2datapoints.get(y_file, [])]
 
             if props_update.get("y", None) == "dvc_inferred_y_value":
                 _update_from_field(

dvc/render/match.py

@@ -1,10 +1,11 @@
+import logging
 import os
 from collections import defaultdict
-from typing import TYPE_CHECKING, Dict, List, Optional
+from typing import TYPE_CHECKING, DefaultDict, Dict, List, NamedTuple, Optional
 
 import dpath
 import dpath.options
-from funcy import last
+from funcy import get_in, last
 
 from dvc.repo.plots import _normpath, infer_data_sources
 from dvc.utils.plots import get_plot_id
@@ -13,8 +14,11 @@ from .convert import _get_converter
 
 if TYPE_CHECKING:
     from dvc.types import StrPath
+    from dvc_render.base import Renderer
+
 
 dpath.options.ALLOW_EMPTY_STRING_KEYS = True
+logger = logging.getLogger(__name__)
 
 
 def _squash_plots_properties(data: List) -> Dict:
@@ -61,21 +65,31 @@ class PlotsData:
         return result
 
 
-def match_defs_renderers(
+class RendererWithErrors(NamedTuple):
+    renderer: "Renderer"
+    source_errors: Dict[str, Dict[str, Exception]]
+    definition_errors: Dict[str, Exception]
+
+
+def match_defs_renderers(  # noqa: C901, PLR0912
     data,
     out=None,
     templates_dir: Optional["StrPath"] = None,
-):
+) -> List[RendererWithErrors]:
     from dvc_render import ImageRenderer, VegaRenderer
 
     plots_data = PlotsData(data)
     renderers = []
     renderer_cls = None
+
     for plot_id, group in plots_data.group_definitions().items():
         plot_datapoints: List[Dict] = []
         props = _squash_plots_properties(group)
         final_props: Dict = {}
 
+        def_errors: Dict[str, Exception] = {}
+        src_errors: DefaultDict[str, Dict[str, Exception]] = defaultdict(dict)
+
         if out is not None:
             props["out"] = out
         if templates_dir is not None:
@@ -94,13 +108,25 @@ def match_defs_renderers(
 
             converter = _get_converter(renderer_cls, inner_id, props, definitions_data)
 
-            dps, rev_props = converter.flat_datapoints(rev)
+            for src in plot_sources:
+                if error := get_in(data, [rev, "sources", "data", src, "error"]):
+                    src_errors[rev][src] = error
+
+            try:
+                dps, rev_props = converter.flat_datapoints(rev)
+            except Exception as e:  # noqa: BLE001, pylint: disable=broad-except
+                logger.warning("In %r, %s", rev, str(e).lower())
+                def_errors[rev] = e
+                continue
+
             if not final_props and rev_props:
                 final_props = rev_props
             plot_datapoints.extend(dps)
 
         if "title" not in final_props:
             final_props["title"] = renderer_id
+
         if renderer_cls is not None:
-            renderers.append(renderer_cls(plot_datapoints, renderer_id, **final_props))
+            renderer = renderer_cls(plot_datapoints, renderer_id, **final_props)
+            renderers.append(RendererWithErrors(renderer, dict(src_errors), def_errors))
     return renderers