fix: support older versions of setuptools_scm

src/scikit_build_core/_version.pyi

@@ -1,6 +1,7 @@
 from __future__ import annotations
 
-__version__: str
 version: str
-__version_tuple__: tuple[int, int, int, str, str] | tuple[int, int, int]
 version_tuple: tuple[int, int, int, str, str] | tuple[int, int, int]
+
+# Note that newer versions of setuptools_scm also add __version__, but we are
+# not forcing new versions of setuptools_scm, so only these imports are allowed.

src/scikit_build_core/build/_wheelfile.py

@@ -21,8 +21,8 @@
 from packaging.utils import BuildTag
 from pyproject_metadata import StandardMetadata
 
+from .. import __version__
 from .._compat.typing import Self
-from .._version import __version__
 
 EMAIL_POLICY = EmailPolicy(max_line_length=0, mangle_from_=False, utf8=True)
 

src/scikit_build_core/cmake.py

@@ -15,10 +15,10 @@
 
 from packaging.version import Version
 
+from . import __version__
 from ._compat.typing import Self
 from ._logging import logger
 from ._shutil import Run
-from ._version import __version__
 from .errors import CMakeConfigError, CMakeNotFoundError, FailedLiveProcessError
 from .program_search import best_program, get_cmake_programs