checkout: move to objects (#6721)

Checkout operation is pretty much the opposite of staging, so it too belongs in objects.

dvc/dependency/repo.py

@@ -63,7 +63,7 @@ class RepoDependency(Dependency):
         return {self.PARAM_PATH: self.def_path, self.PARAM_REPO: self.def_repo}
 
     def download(self, to, jobs=None):
-        from dvc.checkout import checkout
+        from dvc.objects.checkout import checkout
 
         for odb, objs in self.get_used_objs().items():
             self.repo.cloud.pull(objs, jobs=jobs, odb=odb)

dvc/output.py

@@ -9,7 +9,6 @@ from funcy import collecting, project
 from voluptuous import And, Any, Coerce, Length, Lower, Required, SetTo
 
 from dvc import objects, prompt
-from dvc.checkout import checkout
 from dvc.exceptions import (
     CheckoutError,
     CollectCacheError,
@@ -17,6 +16,7 @@ from dvc.exceptions import (
     MergeError,
     RemoteCacheRequiredError,
 )
+from dvc.objects.checkout import checkout
 
 from .fs import get_cloud_fs
 from .fs.hdfs import HDFSFileSystem

tests/func/test_add.py

@@ -953,7 +953,8 @@ def test_add_with_cache_link_error(tmp_dir, dvc, mocker, capsys):
     tmp_dir.gen("foo", "foo")
 
     mocker.patch(
-        "dvc.checkout._do_link", side_effect=DvcException("link failed")
+        "dvc.objects.checkout._do_link",
+        side_effect=DvcException("link failed"),
     )
     dvc.add("foo")
     err = capsys.readouterr()[1]