[1.1] fix: Broken cache on Windows

poetry/installation/executor.py

@@ -11,6 +11,7 @@
 
 from poetry.core.packages.file_dependency import FileDependency
 from poetry.core.packages.utils.link import Link
+from poetry.core.packages.utils.utils import url_to_path
 from poetry.core.pyproject.toml import PyProjectTOML
 from poetry.io.null_io import NullIO
 from poetry.utils._compat import PY2
@@ -611,16 +612,11 @@ def _download_link(self, operation, link):
             hashes = {f["hash"] for f in package.files}
             hash_types = {h.split(":")[0] for h in hashes}
             archive_hashes = set()
+            archive_path = url_to_path(archive.url) if isinstance(archive, Link) else archive
             for hash_type in hash_types:
                 archive_hashes.add(
                     "{}:{}".format(
-                        hash_type,
-                        FileDependency(
-                            package.name,
-                            Path(archive.path)
-                            if isinstance(archive, Link)
-                            else archive,
-                        ).hash(hash_type),
+                        hash_type, FileDependency(package.name, archive_path).hash(hash_type),
                     )
                 )
 
@@ -629,7 +625,7 @@ def _download_link(self, operation, link):
                     "Invalid hashes ({}) for {} using archive {}. Expected one of {}.".format(
                         ", ".join(sorted(archive_hashes)),
                         package,
-                        archive.name,
+                        archive_path.name,
                         ", ".join(sorted(hashes)),
                     )
                 )

tests/installation/test_executor.py

@@ -327,3 +327,34 @@ def test_executor_should_check_every_possible_hash_types_before_failing(
             Install(package),
             Link("https://example.com/demo-0.1.0-py2.py3-none-any.whl"),
         )
+
+
+def test_executor_should_use_cached_link_and_hash(
+    config, io, pool, mocker, fixture_dir, tmp_dir
+):
+    # Produce a file:/// URI that is a valid link
+    link_cached = Link(
+        fixture_dir("distributions")
+        .joinpath("demo-0.1.0-py2.py3-none-any.whl")
+        .as_uri()
+    )
+    mocker.patch.object(
+        Chef, "get_cached_archive_for_link", side_effect=lambda _: link_cached
+    )
+
+    env = MockEnv(path=Path(tmp_dir))
+    executor = Executor(env, pool, config, io)
+
+    package = Package("demo", "0.1.0")
+    package.files = [
+        {
+            "file": "demo-0.1.0-py2.py3-none-any.whl",
+            "hash": "md5:15507846fd4299596661d0197bfb4f90",
+        }
+    ]
+
+    archive = executor._download_link(
+        Install(package), Link("https://example.com/demo-0.1.0-py2.py3-none-any.whl")
+    )
+
+    assert archive == link_cached