Merge branch 'main' into feature/uniform

Author: jaraco

CHANGES.rst

@@ -3,6 +3,13 @@ v4.4.0
 
 * Remove SelectableGroups deprecation exception for flake8.
 
+v4.3.1
+=======
+
+* #320: Fix issue where normalized name for eggs was
+  incorrectly solicited, leading to metadata being
+  unavailable for eggs.
+
 v4.3.0
 =======
 

README.rst

@@ -40,7 +40,7 @@ were contributed to different versions in the standard library:
 
    * - importlib_metadata
      - stdlib
-   * - 3.10
+   * - 4.2
      - 3.10
    * - 1.4
      - 3.8

importlib_metadata/__init__.py

@@ -804,7 +804,17 @@ def locate_file(self, path):
 
     @property
     def _normalized_name(self):
+        """
+        Performance optimization: where possible, resolve the
+        normalized name from the file system path.
+        """
         stem = os.path.basename(str(self._path))
+        return self._name_from_stem(stem) or super()._normalized_name
+
+    def _name_from_stem(self, stem):
+        name, ext = os.path.splitext(stem)
+        if ext not in ('.dist-info', '.egg-info'):
+            return
         name, sep, rest = stem.partition('-')
         return name
 

tests/test_zip.py

@@ -79,3 +79,7 @@ def test_files(self):
         for file in files('example'):
             path = str(file.dist.locate_file(file))
             assert '.egg/' in path, path
+
+    def test_normalized_name(self):
+        dist = distribution('example')
+        assert dist._normalized_name == 'example'