Refresh project structure (skeleton)

.github/workflows/main.yml

@@ -41,29 +41,29 @@ jobs:
       # https://blog.jaraco.com/efficient-use-of-ci-resources/
       matrix:
         python:
-        - "3.9"
+        - "3.10"
         - ">=3.13.5"  # temporary bound until it becomes the default, python/cpython#135151
         platform:
         - ubuntu-latest
         - macos-latest
         - windows-latest
         include:
-        - python: "3.10"
-          platform: ubuntu-latest
         - python: "3.11"
           platform: ubuntu-latest
         - python: "3.12"
           platform: ubuntu-latest
         - python: "3.14"
           platform: ubuntu-latest
+        - python: "3.15"
+          platform: ubuntu-latest
         - python: pypy3.10
           platform: ubuntu-latest
           distutils: stdlib
         - platform: ubuntu-latest
           python: "3.10"
           distutils: stdlib
     runs-on: ${{ matrix.platform }}
-    continue-on-error: ${{ matrix.python == '3.14' || matrix.python == 'pypy3.10' }}
+    continue-on-error: ${{ matrix.python == '3.15' || matrix.python == 'pypy3.10' }}
     # XXX: pypy seems to be flaky with unrelated tests in #6345
     env:
       SETUPTOOLS_USE_DISTUTILS: ${{ matrix.distutils || 'local' }}
@@ -73,7 +73,7 @@ jobs:
       - name: Install build dependencies
         # Install dependencies for building packages on pre-release Pythons
         # jaraco/skeleton#161
-        if: matrix.python == '3.14' && matrix.platform == 'ubuntu-latest'
+        if: matrix.python == '3.15' && matrix.platform == 'ubuntu-latest'
         run: |
           sudo apt update
           sudo apt install -y libxml2-dev libxslt-dev
@@ -187,7 +187,7 @@ jobs:
     strategy:
       matrix:
         python:
-        - 39
+        - 312
         platform:
         - windows-latest
     runs-on: ${{ matrix.platform }}

.github/workflows/pyright.yml

@@ -42,8 +42,8 @@ jobs:
       # https://blog.jaraco.com/efficient-use-of-ci-resources/
       matrix:
         python:
-          - "3.9"
-          - "3.13"
+          - "3.10"
+          - "3.14"
         platform:
           - ubuntu-latest
     runs-on: ${{ matrix.platform }}

README.rst

@@ -14,7 +14,7 @@
 .. |docs-badge| image:: https://img.shields.io/readthedocs/setuptools/latest.svg
    :target: https://setuptools.pypa.io
 
-.. |skeleton-badge| image:: https://img.shields.io/badge/skeleton-2025-informational
+.. |skeleton-badge| image:: https://img.shields.io/badge/skeleton-2026-informational
    :target: https://blog.jaraco.com/skeleton
 
 .. |codecov-badge| image:: https://img.shields.io/codecov/c/github/pypa/setuptools/master.svg?logo=codecov&logoColor=white

newsfragments/+0af71c41.feature.rst

@@ -0,0 +1 @@
+Require Python 3.10 or later.

pyproject.toml

@@ -26,7 +26,7 @@ classifiers = [
 	"Topic :: System :: Systems Administration",
 	"Topic :: Utilities",
 ]
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 license = "MIT"
 dependencies = [
 ]
@@ -109,7 +109,7 @@ core = [
 
 check = [
 	# upstream
-	"pytest-checkdocs >= 2.4",
+	"pytest-checkdocs >= 2.14",
 	"pytest-ruff >= 0.2.1; sys_platform != 'cygwin'",
 
 	# local
@@ -123,12 +123,14 @@ cover = [
 ]
 
 enabler = [
-	"pytest-enabler >= 2.2",
+	"pytest-enabler >= 3.4",
 ]
 
 type = [
 	# upstream
-	"pytest-mypy",
+
+    # Exclude PyPy from type checks (python/mypy#20454 jaraco/skeleton#187)
+	"pytest-mypy >= 1.0.1; platform_python_implementation != 'PyPy'",
 
 	# local
 

setuptools/_importlib.py

@@ -1,9 +1,2 @@
-import sys
-
-if sys.version_info < (3, 10):
-    import importlib_metadata as metadata  # pragma: no cover
-else:
-    import importlib.metadata as metadata  # noqa: F401
-
-
+import importlib.metadata as metadata  # noqa: F401
 import importlib.resources as resources  # noqa: F401

setuptools/_path.py

@@ -3,15 +3,15 @@
 import contextlib
 import os
 import sys
-from typing import TYPE_CHECKING, TypeVar, Union
+from typing import TYPE_CHECKING, TypeVar
 
 from more_itertools import unique_everseen
 
 if TYPE_CHECKING:
-    from typing_extensions import TypeAlias
+    from typing import TypeAlias
 
-StrPath: TypeAlias = Union[str, os.PathLike[str]]  #  Same as _typeshed.StrPath
-StrPathT = TypeVar("StrPathT", bound=Union[str, os.PathLike[str]])
+StrPath: TypeAlias = str | os.PathLike[str]  #  Same as _typeshed.StrPath
+StrPathT = TypeVar("StrPathT", bound=str | os.PathLike[str])
 
 
 def ensure_directory(path):

setuptools/_reqs.py

@@ -1,17 +1,17 @@
 from __future__ import annotations
 
-from collections.abc import Iterable, Iterator
+from collections.abc import Callable, Iterable, Iterator
 from functools import lru_cache
-from typing import TYPE_CHECKING, Callable, TypeVar, Union, overload
+from typing import TYPE_CHECKING, TypeVar, overload
 
 import jaraco.text as text
 from packaging.requirements import Requirement
 
 if TYPE_CHECKING:
-    from typing_extensions import TypeAlias
+    from typing import TypeAlias
 
 _T = TypeVar("_T")
-_StrOrIter: TypeAlias = Union[str, Iterable[str]]
+_StrOrIter: TypeAlias = str | Iterable[str]
 
 
 parse_req: Callable[[str], Requirement] = lru_cache()(Requirement)

setuptools/_shutil.py

@@ -2,7 +2,8 @@
 
 import os
 import stat
-from typing import Callable, TypeVar
+from collections.abc import Callable
+from typing import TypeVar
 
 from .compat import py311
 

setuptools/build_meta.py

@@ -39,7 +39,7 @@
 import warnings
 from collections.abc import Iterable, Iterator, Mapping
 from pathlib import Path
-from typing import TYPE_CHECKING, NoReturn, Union
+from typing import TYPE_CHECKING, NoReturn
 
 import setuptools
 
@@ -52,7 +52,7 @@
 from distutils.util import strtobool
 
 if TYPE_CHECKING:
-    from typing_extensions import TypeAlias
+    from typing import TypeAlias
 
 __all__ = [
     'get_requires_for_build_sdist',
@@ -144,7 +144,7 @@ def suppress_known_deprecation():
         yield
 
 
-_ConfigSettings: TypeAlias = Union[Mapping[str, Union[str, list[str], None]], None]
+_ConfigSettings: TypeAlias = Mapping[str, str | list[str] | None] | None
 """
 Currently the user can run::
 

setuptools/command/bdist_egg.py

@@ -23,8 +23,9 @@
 from distutils.dir_util import mkpath, remove_tree
 
 if TYPE_CHECKING:
+    from typing import TypeAlias
+
     from _typeshed import GenericPath
-    from typing_extensions import TypeAlias
 
 # Same as zipfile._ZipFileMode from typeshed
 _ZipFileMode: TypeAlias = Literal["r", "w", "x", "a"]

setuptools/compat/py311.py

@@ -2,11 +2,13 @@
 
 import shutil
 import sys
-from typing import TYPE_CHECKING, Any, Callable
+from collections.abc import Callable
+from typing import TYPE_CHECKING, Any
 
 if TYPE_CHECKING:
+    from typing import TypeAlias
+
     from _typeshed import ExcInfo, StrOrBytesPath
-    from typing_extensions import TypeAlias
 
 # Same as shutil._OnExcCallback from typeshed
 _OnExcCallback: TypeAlias = Callable[[Callable[..., Any], str, BaseException], object]

setuptools/config/__init__.py

@@ -2,8 +2,9 @@
 ``setuptools.config.setupcfg``
 """
 
+from collections.abc import Callable
 from functools import wraps
-from typing import Callable, TypeVar, cast
+from typing import TypeVar, cast
 
 from ..warnings import SetuptoolsDeprecationWarning
 from . import setupcfg

setuptools/config/_apply_pyprojecttoml.py

@@ -12,13 +12,13 @@
 
 import logging
 import os
-from collections.abc import Mapping
+from collections.abc import Callable, Mapping
 from email.headerregistry import Address
 from functools import partial, reduce
 from inspect import cleandoc
 from itertools import chain
 from types import MappingProxyType
-from typing import TYPE_CHECKING, Any, Callable, TypeVar, Union
+from typing import TYPE_CHECKING, Any, TypeVar
 
 from .. import _static
 from .._path import StrPath
@@ -27,17 +27,17 @@
 from ..warnings import SetuptoolsDeprecationWarning, SetuptoolsWarning
 
 if TYPE_CHECKING:
-    from typing_extensions import TypeAlias
+    from typing import TypeAlias
 
     from setuptools._importlib import metadata
     from setuptools.dist import Distribution
 
     from distutils.dist import _OptionsList  # Comes from typeshed
 
 
 EMPTY: Mapping = MappingProxyType({})  # Immutable dict-like
-_ProjectReadmeValue: TypeAlias = Union[str, dict[str, str]]
-_Correspondence: TypeAlias = Callable[["Distribution", Any, Union[StrPath, None]], None]
+_ProjectReadmeValue: TypeAlias = str | dict[str, str]
+_Correspondence: TypeAlias = Callable[["Distribution", Any, StrPath | None], None]
 _T = TypeVar("_T")
 
 _logger = logging.getLogger(__name__)
@@ -405,7 +405,7 @@
     >>> _attrgetter("d")(obj) is None
     True
     """
     return partial(reduce, lambda acc, x: getattr(acc, x, None), attr.split("."))
 
 
 def _some_attrgetter(*items):

setuptools/config/expand.py

@@ -25,14 +25,14 @@
 import os
 import pathlib
 import sys
-from collections.abc import Iterable, Iterator, Mapping
+from collections.abc import Callable, Iterable, Iterator, Mapping
 from configparser import ConfigParser
 from glob import iglob
 from importlib.machinery import ModuleSpec, all_suffixes
 from itertools import chain
 from pathlib import Path
 from types import ModuleType, TracebackType
-from typing import TYPE_CHECKING, Any, Callable, TypeVar
+from typing import TYPE_CHECKING, Any, TypeVar
 
 from .. import _static
 from .._path import StrPath, same_path as _same_path
@@ -56,7 +56,7 @@
     def __init__(self, name: str, spec: ModuleSpec) -> None:
         module = ast.parse(pathlib.Path(spec.origin).read_bytes())  # type: ignore[arg-type] # Let it raise an error on None
         vars(self).update(locals())
         del self.self
 
     def _find_assignments(self) -> Iterator[tuple[ast.AST, ast.AST]]:
         for statement in self.module.body:

setuptools/config/pyprojecttoml.py

@@ -13,11 +13,11 @@
 
 import logging
 import os
-from collections.abc import Mapping
+from collections.abc import Callable, Mapping
 from contextlib import contextmanager
 from functools import partial
 from types import TracebackType
-from typing import TYPE_CHECKING, Any, Callable
+from typing import TYPE_CHECKING, Any
 
 from .._path import StrPath
 from ..errors import FileError, InvalidConfigError

setuptools/config/setupcfg.py

@@ -16,9 +16,9 @@
 import os
 from abc import abstractmethod
 from collections import defaultdict
-from collections.abc import Iterable, Iterator
+from collections.abc import Callable, Iterable, Iterator
 from functools import partial, wraps
-from typing import TYPE_CHECKING, Any, Callable, ClassVar, Generic, TypeVar, cast
+from typing import TYPE_CHECKING, Any, ClassVar, Generic, TypeVar, cast
 
 from packaging.markers import default_environment as marker_env
 from packaging.requirements import InvalidRequirement, Requirement
@@ -31,7 +31,7 @@
 from . import expand
 
 if TYPE_CHECKING:
-    from typing_extensions import TypeAlias
+    from typing import TypeAlias
 
     from setuptools.dist import Distribution
 

setuptools/dist.py

@@ -10,7 +10,7 @@
 from collections.abc import Iterable, Iterator, MutableMapping, Sequence
 from glob import glob
 from pathlib import Path
-from typing import TYPE_CHECKING, Any, Union
+from typing import TYPE_CHECKING, Any
 
 from more_itertools import partition, unique_everseen
 from packaging.markers import InvalidMarker, Marker
@@ -44,7 +44,7 @@
 from distutils.util import strtobool
 
 if TYPE_CHECKING:
-    from typing_extensions import TypeAlias
+    from typing import TypeAlias
 
 
 __all__ = ['Distribution']
@@ -59,10 +59,10 @@
 - not imply a nested type (like `dict`)
 for use with `isinstance`.
 """
-_Sequence: TypeAlias = Union[tuple[str, ...], list[str]]
+_Sequence: TypeAlias = tuple[str, ...] | list[str]
 # This is how stringifying _Sequence would look in Python 3.10
 _sequence_type_repr = "tuple[str, ...] | list[str]"
-_OrderedStrSequence: TypeAlias = Union[str, dict[str, Any], Sequence[str]]
+_OrderedStrSequence: TypeAlias = str | dict[str, Any] | Sequence[str]
 """
 :meta private:
 Avoid single-use iterable. Disallow sets.

setuptools/tests/test_build_meta.py

@@ -7,9 +7,10 @@
 import sys
 import tarfile
 import warnings
+from collections.abc import Callable
 from concurrent import futures
 from pathlib import Path
-from typing import Any, Callable
+from typing import Any
 from zipfile import ZipFile
 
 import pytest

setuptools/warnings.py

@@ -15,7 +15,7 @@
 from typing import TYPE_CHECKING
 
 if TYPE_CHECKING:
-    from typing_extensions import TypeAlias
+    from typing import TypeAlias
 
 _DueDate: TypeAlias = tuple[int, int, int]  # time tuple
 _INDENT = 8 * " "

towncrier.toml

@@ -1,4 +1,3 @@
 [tool.towncrier]
 title_format = "{version}"
-# workaround for sphinx-contrib/sphinxcontrib-towncrier#83
-directory = "newsfragments"
+directory = "newsfragments"  # jaraco/skeleton#184

tox.ini

@@ -44,7 +44,7 @@ deps =
 	diff-cover
 commands =
 	pytest {posargs} --cov-report xml
-	diff-cover coverage.xml --compare-branch=origin/main --html-report diffcov.html
+	diff-cover coverage.xml --compare-branch=origin/main --format html:diffcov.html
 	diff-cover coverage.xml --compare-branch=origin/main --fail-under=100
 
 [testenv:docs]