From fe2d913821d9e24eed09b6dda55d6207d440e1bb Mon Sep 17 00:00:00 2001
From: Ruslan Kuprieiev <kupruser@gmail.com>
Date: Thu, 28 Jan 2021 03:05:05 +0200
Subject: [PATCH] list: don't clone local repos (#5341)

* repo: introduce Repo.open

* ls: don't clone local repos
---
 dvc/external_repo.py |  8 ++++++--
 dvc/repo/__init__.py | 12 ++++++++++++
 dvc/repo/ls.py       |  4 ++--
 3 files changed, 20 insertions(+), 4 deletions(-)

diff --git a/dvc/external_repo.py b/dvc/external_repo.py
index 7b12df4cd..3dd2fc96e 100644
--- a/dvc/external_repo.py
+++ b/dvc/external_repo.py
@@ -59,13 +59,17 @@ def external_repo(
         url=url,
         scm=None if for_write else Git(root_dir),
         rev=None if for_write else rev,
-        subrepos=not for_write,
-        uninitialized=True,
         config=config,
         repo_factory=make_repo,
         **kwargs,
     )
 
+    if "subrepos" not in repo_kwargs:
+        repo_kwargs["subrepos"] = True
+
+    if "uninitialized" not in repo_kwargs:
+        repo_kwargs["uninitialized"] = True
+
     repo = Repo(**repo_kwargs)
 
     try:
diff --git a/dvc/repo/__init__.py b/dvc/repo/__init__.py
index 25c80fa3c..9c98bd8c1 100644
--- a/dvc/repo/__init__.py
+++ b/dvc/repo/__init__.py
@@ -202,6 +202,18 @@ class Repo:
     def __str__(self):
         return self.url or self.root_dir
 
+    @staticmethod
+    @contextmanager
+    def open(url, *args, **kwargs):
+        if os.path.exists(url):
+            yield Repo(url, *args, **kwargs)
+            return
+
+        from dvc.external_repo import external_repo
+
+        with external_repo(url, *args, **kwargs) as repo:
+            yield repo
+
     @cached_property
     def scm(self):
         from dvc.scm import SCM
diff --git a/dvc/repo/ls.py b/dvc/repo/ls.py
index 720b58661..12c759385 100644
--- a/dvc/repo/ls.py
+++ b/dvc/repo/ls.py
@@ -28,9 +28,9 @@ def ls(
             "isexec": bool,
         }
     """
-    from dvc.external_repo import external_repo
+    from . import Repo
 
-    with external_repo(url, rev) as repo:
+    with Repo.open(url, rev, subrepos=True, uninitialized=True) as repo:
         path_info = PathInfo(repo.root_dir)
         if path:
             path_info /= path