Inline os.PathLike using future annotations.

importlib_metadata/__init__.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import os
 import re
 import abc
@@ -21,7 +23,6 @@
 from ._collections import FreezableDefaultDict, Pair
 from ._compat import (
     NullFinder,
-    StrPath,
     install,
 )
 from ._functools import method_cache, pass_none
@@ -387,7 +388,7 @@ def read_text(self, filename) -> Optional[str]:
         """
 
     @abc.abstractmethod
-    def locate_file(self, path: StrPath) -> SimplePath:
+    def locate_file(self, path: os.PathLike[str]) -> SimplePath:
         """
         Given a path to a file in this distribution, return a SimplePath
         to it.
@@ -432,7 +433,7 @@ def discover(
         )
 
     @staticmethod
-    def at(path: StrPath) -> "Distribution":
+    def at(path: os.PathLike[str]) -> "Distribution":
         """Return a Distribution for the indicated metadata path.
 
         :param path: a string or path-like object
@@ -840,7 +841,7 @@ def __init__(self, path: SimplePath) -> None:
         """
         self._path = path
 
-    def read_text(self, filename: StrPath) -> Optional[str]:
+    def read_text(self, filename: os.PathLike[str]) -> Optional[str]:
         with suppress(
             FileNotFoundError,
             IsADirectoryError,
@@ -854,7 +855,7 @@ def read_text(self, filename: StrPath) -> Optional[str]:
 
     read_text.__doc__ = Distribution.read_text.__doc__
 
-    def locate_file(self, path: StrPath) -> SimplePath:
+    def locate_file(self, path: os.PathLike[str]) -> SimplePath:
         return self._path.parent / path
 
     @property

importlib_metadata/_compat.py

@@ -1,9 +1,6 @@
-import os
 import sys
 import platform
 
-from typing import Union
-
 
 __all__ = ['install', 'NullFinder']
 
@@ -58,10 +55,3 @@ def pypy_partial(val):
     """
     is_pypy = platform.python_implementation() == 'PyPy'
     return val + is_pypy
-
-
-if sys.version_info >= (3, 9):
-    StrPath = Union[str, os.PathLike[str]]
-else:
-    # PathLike is only subscriptable at runtime in 3.9+
-    StrPath = Union[str, "os.PathLike[str]"]  # pragma: no cover