Now unconditionally run pep517 to retrieve metadata for a local package.

Author: jaraco

importlib_metadata/__init__.py

@@ -198,23 +198,11 @@ def _discover_resolvers():
         return filter(None, declared)
 
     @classmethod
-    def find_local(cls):
-        return cls._from_pyproject() or cls._heuristic_local()
-
-    @staticmethod
-    def _from_pyproject():
-        with suppress(Exception):
-            from pep517.build_meta import build_meta_as_zip
-            return PathDistribution(build_meta_as_zip())
-
-    @classmethod
-    def _heuristic_local(cls):
-        dists = itertools.chain.from_iterable(
-            resolver(path=['.', 'src'])
-            for resolver in cls._discover_resolvers()
-            )
-        dist, = dists
-        return dist
+    def find_local(cls, root='.'):
+        import pep517.build_meta as bm
+        system = bm.compat_build_system(root)
+        builder = functools.partial(bm.build_meta, build_system=system)
+        return PathDistribution(zipp.Path(bm.build_meta_as_zip(builder)))
 
     @property
     def metadata(self):

importlib_metadata/tests/fixtures.py

@@ -150,11 +150,18 @@ def setUp(self):
 
 
 class LocalPackage:
+    files = {
+        "setup.py": """
+            import setuptools
+            setuptools.setup(name="local-pkg", version="2.0.1")
+            """,
+        }
+
     def setUp(self):
         self.fixtures = ExitStack()
         self.addCleanup(self.fixtures.close)
         self.fixtures.enter_context(tempdir_as_cwd())
-        build_files(EggInfoPkg.files)
+        build_files(self.files)
 
 
 def build_files(file_defs, prefix=pathlib.Path()):

importlib_metadata/tests/test_api.py

@@ -156,4 +156,5 @@ def test_more_complex_deps_requires_text(self):
 class LocalProjectTests(fixtures.LocalPackage, unittest.TestCase):
     def test_find_local(self):
         dist = local_distribution()
-        assert dist.metadata['Name'] == 'egginfo-pkg'
+        assert dist.metadata['Name'] == 'local-pkg'
+        assert dist.version == '2.0.1'