drop pkg_resources from bdist_wheel

src/wheel/bdist_wheel.py

@@ -6,6 +6,7 @@
 
 from __future__ import annotations
 
+import importlib.metadata
 import os
 import re
 import shutil
@@ -21,20 +22,38 @@
 from shutil import rmtree
 from zipfile import ZIP_DEFLATED, ZIP_STORED
 
-import pkg_resources
 from setuptools import Command
 
 from . import __version__ as wheel_version
 from .macosx_libfile import calculate_macosx_platform_tag
 from .metadata import pkginfo_to_metadata
 from .util import log
 from .vendored.packaging import tags
+from .vendored.packaging import version as _packaging_version
 from .wheelfile import WheelFile
 
-safe_name = pkg_resources.safe_name
-safe_version = pkg_resources.safe_version
+
+def safe_name(name):
+    """Convert an arbitrary string to a standard distribution name
+    Any runs of non-alphanumeric/. characters are replaced with a single '-'.
+    """
+    return re.sub("[^A-Za-z0-9.]+", "-", name)
+
+
+def safe_version(version):
+    """
+    Convert an arbitrary string to a standard version string
+    """
+    try:
+        # normalize the version
+        return str(_packaging_version.Version(version))
+    except _packaging_version.InvalidVersion:
+        version = version.replace(" ", ".")
+        return re.sub("[^A-Za-z0-9.]+", "-", version)
+
+
 setuptools_major_version = int(
-    pkg_resources.get_distribution("setuptools").version.split(".")[0]
+    importlib.metadata.distribution("setuptools").version.split(".")[0]
 )
 
 PY_LIMITED_API_PATTERN = r"cp3\d"

src/wheel/vendored/packaging/_structures.py

@@ -0,0 +1,61 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+
+class InfinityType:
+    def __repr__(self) -> str:
+        return "Infinity"
+
+    def __hash__(self) -> int:
+        return hash(repr(self))
+
+    def __lt__(self, other: object) -> bool:
+        return False
+
+    def __le__(self, other: object) -> bool:
+        return False
+
+    def __eq__(self, other: object) -> bool:
+        return isinstance(other, self.__class__)
+
+    def __gt__(self, other: object) -> bool:
+        return True
+
+    def __ge__(self, other: object) -> bool:
+        return True
+
+    def __neg__(self: object) -> "NegativeInfinityType":
+        return NegativeInfinity
+
+
+Infinity = InfinityType()
+
+
+class NegativeInfinityType:
+    def __repr__(self) -> str:
+        return "-Infinity"
+
+    def __hash__(self) -> int:
+        return hash(repr(self))
+
+    def __lt__(self, other: object) -> bool:
+        return True
+
+    def __le__(self, other: object) -> bool:
+        return True
+
+    def __eq__(self, other: object) -> bool:
+        return isinstance(other, self.__class__)
+
+    def __gt__(self, other: object) -> bool:
+        return False
+
+    def __ge__(self, other: object) -> bool:
+        return False
+
+    def __neg__(self: object) -> InfinityType:
+        return Infinity
+
+
+NegativeInfinity = NegativeInfinityType()