apply review feedback, hash is optional

src/poetry/repositories/http_repository.py

@@ -244,7 +244,7 @@ def _links_to_data(self, links: list[Link], data: PackageInfo) -> dict[str, Any]
                 f' "{data.version}"'
             )
         urls = defaultdict(list)
-        metadata = {}
+        metadata: dict[str, pkginfo.Distribution] = {}
         files: list[dict[str, Any]] = []
         for link in links:
             if link.yanked and not data.yanked:
@@ -255,24 +255,26 @@ def _links_to_data(self, links: list[Link], data: PackageInfo) -> dict[str, Any]
                     assert link.metadata_url is not None
                     response = self.session.get(link.metadata_url)
                     distribution = pkginfo.Distribution()
-                    assert link.metadata_hash_name is not None
-                    metadata_hash = getattr(hashlib, link.metadata_hash_name)(
-                        response.text.encode()
-                    ).hexdigest()
-
-                    if metadata_hash != link.metadata_hash:
-                        self._log(
-                            f"Metadata file hash ({metadata_hash}) does not match"
-                            f" expected hash ({link.metadata_hash}).",
-                            level="warning",
-                        )
+                    if link.metadata_hash_name is not None:
+                        metadata_hash = getattr(hashlib, link.metadata_hash_name)(
+                            response.text.encode()
+                        ).hexdigest()
+
+                        if metadata_hash != link.metadata_hash:
+                            self._log(
+                                f"Metadata file hash ({metadata_hash}) does not match"
+                                f" expected hash ({link.metadata_hash})."
+                                f" Metadata file for {link.filename} will be ignored.",
+                                level="warning",
+                            )
+                            continue
 
                     distribution.parse(response.content)
                     metadata[link.url] = distribution
                 except requests.HTTPError:
                     self._log(
                         f"Failed to retrieve metadata at {link.metadata_url}",
-                        level="debug",
+                        level="warning",
                     )
 
             if link.is_wheel:

tests/repositories/test_legacy_repository.py

@@ -183,7 +183,7 @@ def _get_mock(url: str, **__: Any) -> requests.Response:
         response.encoding = "application/text"
         response._content = MockRepository.FIXTURES.joinpath(
             "metadata", posixpath.basename(url)
-        ).read_bytes()
+        ).read_text().encode()
         return response
     raise requests.HTTPError()
 
@@ -206,6 +206,14 @@ def test_get_package_information_pep_658(mocker: MockerFixture) -> None:
         assert package.name == "isort-metadata"
         assert package.version.text == isort_package.version.text == "4.3.4"
         assert package.description == isort_package.description
+        assert (
+            package.requires == isort_package.requires == [Dependency("futures", "*")]
+        )
+        assert (
+            str(package.python_constraint)
+            == str(isort_package.python_constraint)
+            == ">=2.7,<3.0.dev0 || >=3.4.dev0"
+        )
 
 
 def test_get_package_information_skips_dependencies_with_invalid_constraints() -> None: