index: data_tree: handle partial imports

dvc/repo/index.py

@@ -255,6 +255,33 @@ def _load_storage_from_out(storage_map, key, out):
         _load_storage_from_import(storage_map, key, out)
 
 
+def _build_tree_from_outs(outs):
+    from dvc_data.hashfile.tree import Tree
+
+    tree = Tree()
+    for out in outs:
+        if not out.use_cache:
+            continue
+
+        ws, key = out.index_key
+
+        if not out.stage.is_partial_import:
+            tree.add((ws, *key), out.meta, out.hash_info)
+            continue
+
+        dep = out.stage.deps[0]
+        if not dep.files:
+            tree.add((ws, *key), dep.meta, dep.hash_info)
+            continue
+
+        for okey, ometa, ohi in dep.get_obj():
+            tree.add((ws, *key, *okey), ometa, ohi)
+
+    tree.digest()
+
+    return tree
+
+
 class Index:
     def __init__(
         self,
@@ -504,20 +531,7 @@ class Index:
 
     @cached_property
     def data_tree(self):
-        from dvc_data.hashfile.tree import Tree
-
-        tree = Tree()
-        for out in self.outs:
-            if not out.use_cache:
-                continue
-
-            ws, key = out.index_key
-
-            tree.add((ws, *key), out.meta, out.hash_info)
-
-        tree.digest()
-
-        return tree
+        return _build_tree_from_outs(self.outs)
 
     @cached_property
     def data(self) -> "Dict[str, DataIndex]":
@@ -772,20 +786,7 @@ class IndexView:
 
     @cached_property
     def data_tree(self):
-        from dvc_data.hashfile.tree import Tree
-
-        tree = Tree()
-        for out in self.outs:
-            if not out.use_cache:
-                continue
-
-            ws, key = out.index_key
-
-            tree.add((ws, *key), out.meta, out.hash_info)
-
-        tree.digest()
-
-        return tree
+        return _build_tree_from_outs(self.outs)
 
     @cached_property
     def data(self) -> Dict[str, Union["DataIndex", "DataIndexView"]]:

dvc/testing/workspace_tests.py

@@ -149,14 +149,33 @@ class TestImportURLVersionAware:
         assert (tmp_dir / "data_dir" / "subdir" / "file").read_text() == "modified"
         assert (tmp_dir / "data_dir" / "new_file").read_text() == "new"
 
-    def test_import_no_download(self, tmp_dir, dvc, remote_version_aware):
+    def test_import_no_download(self, tmp_dir, dvc, remote_version_aware, scm):
         remote_version_aware.gen({"data_dir": {"subdir": {"file": "file"}}})
         dvc.imp_url("remote://upstream/data_dir", version_aware=True, no_download=True)
+        scm.add(["data_dir.dvc", ".gitignore"])
+        scm.commit("v1")
+        scm.tag("v1")
+
         stage = first(dvc.index.stages)
         assert not stage.outs[0].can_push
 
-        dvc.pull()
-        assert (tmp_dir / "data_dir" / "subdir" / "file").read_text() == "file"
+        (remote_version_aware / "data_dir" / "foo").write_text("foo")
+        dvc.update(no_download=True)
+        assert dvc.pull()["fetched"] == 2
+        assert (tmp_dir / "data_dir").read_text() == {
+            "foo": "foo",
+            "subdir": {"file": "file"},
+        }
+        scm.add(["data_dir.dvc", ".gitignore"])
+        scm.commit("update")
+
+        scm.checkout("v1")
+        dvc.cache.local.clear()
+        remove(tmp_dir / "data_dir")
+        assert dvc.pull()["fetched"] == 1
+        assert (tmp_dir / "data_dir").read_text() == {
+            "subdir": {"file": "file"},
+        }
 
         dvc.commit(force=True)
         assert dvc.status() == {}

pyproject.toml

@@ -35,7 +35,7 @@ dependencies = [
     "configobj>=5.0.6",
     "distro>=1.3",
     "dpath<3,>=2.1.0",
-    "dvc-data>=3.6,<3.7",
+    "dvc-data>=3.7,<3.8",
     "dvc-http>=2.29.0",
     "dvc-render>=1.0.0,<2",
     "dvc-studio-client>=0.17.1,<1",

tests/func/test_data_cloud.py

@@ -271,7 +271,7 @@ def test_pull_partial_import(tmp_dir, dvc, local_workspace):
     stage = dvc.imp_url("remote://workspace/file", os.fspath(dst), no_download=True)
 
     result = dvc.pull("file")
-    assert result["fetched"] == 0
+    assert result["fetched"] == 1
     assert dst.exists()
 
     assert stage.outs[0].get_hash().value == "d10b4c3ff123b26dc068d43a8bef2d23"