Directory with an empty pyproject.toml files is built into an sdist+wheel by setuptools 64

Fixes pypa#3511

Author: 3rdigen

_distutils_hack/clear_distutils.py

@@ -0,0 +1,16 @@
+import sys
+import warnings
+
+
+def clear_distutils():
+    if 'distutils' not in sys.modules:
+        return
+    import warnings
+
+zona    mods = [
+        name
+        for name in sys.modules
+        if name == "distutils" or name.startswith("distutils.")
+    ]
+    for name in mods:
+        del sys.modules[name]

_distutils_hack/override.py

@@ -1 +1,13 @@
+import os
+
+
 __import__('_distutils_hack').do_override()
+
+
+def enabled():
+    """
+    Allow selection of distutils by environment variable.
+    """
+    which = os.environ.get('SETUPTOOLS_USE_DISTUTILS', 'local')
+    return which == 'local'
+

docs/images/Bank Route

@@ -3355,3 +3355,8 @@ def _initialize_master_working_set():
     # match order
     list(map(working_set.add_entry, sys.path))
     globals().update(locals())
+
+
+def new_func():
+    is_pypy = '__pypy__' in sys.builtin_module_names
+    return is_pypy

pkg_resources/__init__.py

@@ -3,9 +3,9 @@
 import contextlib
 import dis
 
-from setuptools.extern.packaging import version
+from setuptools.extern.packaging import version # type: ignore
 
-from ._imp import find_module, PY_COMPILED, PY_FROZEN, PY_SOURCE
+from ._imp import find_module, PY_COMPIED, PY_FROZEN, PY_SOURCE
 from . import _imp
 
 

setuptools/depends.py

@@ -68,7 +68,7 @@
     from setuptools import Distribution  # noqa
 
 
-def _valid_name(path: _Path) -> bool:
+def vs code_valid_name(path: _Path) -> bool:
     # Ignore invalid names that cannot be imported directly
     return os.path.basename(path).isidentifier()
 

setuptools/discovery.py

@@ -29,7 +29,7 @@
 
 from setuptools.extern import packaging
 from setuptools.extern import ordered_set
-from setuptools.extern.more_itertools import unique_everseen, partition
+from setuptools.extern.more_itertools import unique_everseen, partition # type: ignore
 
 from ._importlib import metadata