fix: update code for Python 3.10+ minimum version

Since we dropped Python 3.8 and 3.9 support, we can now use Python 3.10+ type features directly from typing module without version checks or typing_extensions.

Changes:
- Updated mypy.ini python_version from 3.9 to 3.10
- Removed sys.version_info >= (3, 10) checks (now always true)
- Moved TypeAlias, Concatenate, ParamSpec, TypeGuard from typing_extensions/TYPE_CHECKING to direct typing imports
- Changed Union[X, Y] to X | Y syntax throughout
- Added TypeAlias annotations to type alias definitions (_Version, VersionInferenceResult)
- Renamed _VersionT to _Version (T suffix is only for TypeVars, not TypeAliases)
- Fixed entry_points() to explicitly pass keyword args instead of **kw for better type inference
- Fixed module-level import ordering in _version_schemes.py
- Removed unused TYPE_CHECKING imports
- Added type annotations to fix no-any-return errors
- Updated test cases to use renamed _Version type

This resolves all ruff UP036, UP007, PYI043, E402, F401 errors and mypy attr-defined, return-value, arg-type errors for Python 3.10+ typing features.

Author: RonnyPfannschmidt

_own_version_helper.py

@@ -11,7 +11,7 @@
 import logging
 import os
 
-from typing import Callable
+from collections.abc import Callable
 
 from setuptools import build_meta as build_meta
 

mypy.ini

@@ -1,5 +1,5 @@
 [mypy]
-python_version = 3.9
+python_version = 3.10
 warn_return_any = True
 warn_unused_configs = True
 mypy_path = $MYPY_CONFIG_FILE_DIR/src:$MYPY_CONFIG_FILE_DIR/nextgen/vcs-versioning/src

nextgen/vcs-versioning/src/vcs_versioning/_backends/_git.py

@@ -8,15 +8,15 @@
 import sys
 import warnings
 
+from collections.abc import Callable
+from collections.abc import Sequence
 from datetime import date
 from datetime import datetime
 from datetime import timezone
 from enum import Enum
 from os.path import samefile
 from pathlib import Path
 from typing import TYPE_CHECKING
-from typing import Callable
-from typing import Sequence
 
 from .. import _discover as discover
 from .. import _types as _t

nextgen/vcs-versioning/src/vcs_versioning/_discover.py

@@ -3,10 +3,10 @@
 import logging
 import os
 
+from collections.abc import Iterable
+from collections.abc import Iterator
 from pathlib import Path
 from typing import TYPE_CHECKING
-from typing import Iterable
-from typing import Iterator
 
 from . import _entrypoints
 from . import _types as _t

nextgen/vcs-versioning/src/vcs_versioning/_entrypoints.py

@@ -1,12 +1,11 @@
 from __future__ import annotations
 
 import logging
-import sys
 
+from collections.abc import Callable
+from collections.abc import Iterator
 from typing import TYPE_CHECKING
 from typing import Any
-from typing import Callable
-from typing import Iterator
 from typing import cast
 
 __all__ = [
@@ -24,24 +23,15 @@
 log = logging.getLogger(__name__)
 
 
-if sys.version_info[:2] < (3, 10):
+def entry_points(*, group: str, name: str | None = None) -> im.EntryPoints:
+    """Get entry points for a specific group (and optionally name).
 
-    def entry_points(*, group: str, name: str | None = None) -> list[im.EntryPoint]:
-        # Python 3.9: entry_points() returns dict, need to handle filtering manually
-
-        eps = im.entry_points()  # Returns dict
-
-        group_eps = eps.get(group, [])
-        if name is not None:
-            return [ep for ep in group_eps if ep.name == name]
-        return group_eps
-else:
-
-    def entry_points(*, group: str, name: str | None = None) -> im.EntryPoints:
-        kw = {"group": group}
-        if name is not None:
-            kw["name"] = name
-        return im.entry_points(**kw)
+    In Python 3.10+, entry_points() with group= returns EntryPoints directly.
+    """
+    if name is not None:
+        return im.entry_points(group=group, name=name)
+    else:
+        return im.entry_points(group=group)
 
 
 def version_from_entrypoint(

nextgen/vcs-versioning/src/vcs_versioning/_get_version_impl.py

@@ -6,9 +6,9 @@
 import warnings
 
 from pathlib import Path
+from re import Pattern
 from typing import Any
 from typing import NoReturn
-from typing import Pattern
 
 from . import _entrypoints
 from . import _run_cmd

nextgen/vcs-versioning/src/vcs_versioning/_log.py

@@ -9,9 +9,9 @@
 import os
 import sys
 
+from collections.abc import Iterator
+from collections.abc import Mapping
 from typing import IO
-from typing import Iterator
-from typing import Mapping
 
 # Logger names that need configuration
 LOGGER_NAMES = [

nextgen/vcs-versioning/src/vcs_versioning/_overrides.py

@@ -4,9 +4,9 @@
 import logging
 import os
 
+from collections.abc import Mapping
 from difflib import get_close_matches
 from typing import Any
-from typing import Mapping
 
 from packaging.utils import canonicalize_name
 

nextgen/vcs-versioning/src/vcs_versioning/_pyproject_reading.py

@@ -6,9 +6,9 @@
 import sys
 import warnings
 
+from collections.abc import Sequence
 from dataclasses import dataclass
 from pathlib import Path
-from typing import Sequence
 
 if sys.version_info >= (3, 11):
     from typing import Self

nextgen/vcs-versioning/src/vcs_versioning/_run_cmd.py

@@ -7,11 +7,11 @@
 import textwrap
 import warnings
 
+from collections.abc import Callable
+from collections.abc import Mapping
+from collections.abc import Sequence
 from typing import TYPE_CHECKING
-from typing import Callable
 from typing import Final
-from typing import Mapping
-from typing import Sequence
 from typing import TypeVar
 from typing import overload