deps: allow importlib-metadata 8.7

pyproject.toml

@@ -10,9 +10,7 @@ dependencies = [
     "cleo (>=2.1.0,<3.0.0)",
     "dulwich (>=0.24.0,<0.25.0)",
     "fastjsonschema (>=2.18.0,<3.0.0)",
-    # <8.7 because .metadata() (and Distribution.metadata) can now return None,
-    # which requires some adaptions to our code.
-    "importlib-metadata (>=4.4,<8.7) ; python_version < '3.10'",
+    "importlib-metadata (>=4.4) ; python_version < '3.10'",
     "installer (>=0.7.0,<0.8.0)",
     "keyring (>=25.1.0,<26.0.0)",
     # packaging uses calver, so version is unclamped

src/poetry/repositories/installed_repository.py

@@ -106,18 +106,16 @@ def is_vcs_package(cls, package: Path | Package, env: Env) -> bool:
             return True
 
     @classmethod
-    def create_package_from_distribution(
-        cls, distribution: metadata.Distribution, env: Env
+    def _create_package_from_distribution(
+        cls, path: Path, dist_metadata: metadata.PackageMetadata, env: Env
     ) -> Package:
         # We first check for a direct_url.json file to determine
         # the type of package.
-        path = Path(str(distribution._path))  # type: ignore[attr-defined]
-
         if (
             path.name.endswith(".dist-info")
             and path.joinpath("direct_url.json").exists()
         ):
-            return cls.create_package_from_pep610(distribution)
+            return cls._create_package_from_pep610(path, dist_metadata)
 
         is_standard_package = env.is_path_relative_to_lib(path)
 
@@ -128,9 +126,7 @@ def create_package_from_distribution(
         source_subdirectory = None
         if is_standard_package:
             if path.name.endswith(".dist-info"):
-                paths = cls.get_package_paths(
-                    env=env, name=distribution.metadata["name"]
-                )
+                paths = cls.get_package_paths(env=env, name=dist_metadata["name"])
                 if paths:
                     is_editable_package = False
                     for src in paths:
@@ -160,32 +156,33 @@ def create_package_from_distribution(
                 source_url,
                 source_reference,
             ) = cls.get_package_vcs_properties_from_path(
-                env.path / "src" / canonicalize_name(distribution.metadata["name"])
+                env.path / "src" / canonicalize_name(dist_metadata["name"])
             )
         elif is_python_project(path.parent):
             source_type = "directory"
             source_url = str(path.parent)
 
         package = Package(
-            distribution.metadata["name"],
-            distribution.metadata["version"],
+            dist_metadata["name"],
+            dist_metadata["version"],
             source_type=source_type,
             source_url=source_url,
             source_reference=source_reference,
             source_resolved_reference=source_resolved_reference,
             source_subdirectory=source_subdirectory,
         )
 
-        package.description = distribution.metadata.get(  # type: ignore[attr-defined]
+        package.description = dist_metadata.get(  # type: ignore[attr-defined]
             "summary",
             "",
         )
 
         return package
 
     @classmethod
-    def create_package_from_pep610(cls, distribution: metadata.Distribution) -> Package:
-        path = Path(str(distribution._path))  # type: ignore[attr-defined]
+    def _create_package_from_pep610(
+        cls, path: Path, dist_metadata: metadata.PackageMetadata
+    ) -> Package:
         source_type = None
         source_url = None
         source_reference = None
@@ -222,8 +219,8 @@ def create_package_from_pep610(cls, distribution: metadata.Distribution) -> Pack
         source_subdirectory = url_reference.get("subdirectory")
 
         package = Package(
-            distribution.metadata["name"],
-            distribution.metadata["version"],
+            dist_metadata["name"],
+            dist_metadata["version"],
             source_type=source_type,
             source_url=source_url,
             source_reference=source_reference,
@@ -232,7 +229,7 @@ def create_package_from_pep610(cls, distribution: metadata.Distribution) -> Pack
             develop=develop,
         )
 
-        package.description = distribution.metadata.get(  # type: ignore[attr-defined]
+        package.description = dist_metadata.get(  # type: ignore[attr-defined]
             "summary",
             "",
         )
@@ -273,8 +270,13 @@ def load(cls, env: Env, with_dependencies: bool = False) -> InstalledRepository:
                 if path in skipped:
                     continue
 
-                name = distribution.metadata.get("name")  # type: ignore[attr-defined]
-                if name is None:
+                dist_metadata = distribution.metadata  # type: ignore[attr-defined]
+                name = (
+                    dist_metadata.get("name")  # type: ignore[attr-defined]
+                    if dist_metadata
+                    else None
+                )
+                if not dist_metadata or name is None:
                     logger.warning(
                         "Project environment contains an invalid distribution"
                         " (<c1>%s</>). Consider removing it manually or recreate"
@@ -289,21 +291,20 @@ def load(cls, env: Env, with_dependencies: bool = False) -> InstalledRepository:
                 if name in seen:
                     continue
 
-                package = cls.create_package_from_distribution(distribution, env)
+                package = cls._create_package_from_distribution(
+                    path, dist_metadata, env
+                )
 
                 if with_dependencies:
-                    for require in distribution.metadata.get_all("requires-dist", []):
+                    for require in dist_metadata.get_all("requires-dist", []):
                         dep = Dependency.create_from_pep_508(require)
                         package.add_dependency(dep)
 
                 seen.add(package.name)
                 repo.add_package(
                     package,
                     is_system_site=bool(
-                        base_env
-                        and base_env.is_path_relative_to_lib(
-                            Path(str(distribution._path))  # type: ignore[attr-defined]
-                        )
+                        base_env and base_env.is_path_relative_to_lib(path)
                     ),
                 )
 

tests/installation/test_executor.py

@@ -692,6 +692,7 @@ def verify_installed_distribution(
 
     distribution = distributions[0]
     metadata = distribution.metadata
+    assert metadata
     assert metadata["Name"] == package.name
     assert metadata["Version"] == package.version.text