42 lines
2.0 KiB
Python
42 lines
2.0 KiB
Python
"""
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Temporary shim module to indirect the bits of distutils we need from setuptools/distutils while providing useful
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error messages beyond `No module named 'distutils' on Python >= 3.12, or when setuptools' vendored distutils is broken.
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This is a compromise to avoid a hard-dep on setuptools for Python >= 3.12, since many users don't need runtime compilation support from CFFI.
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"""
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import sys
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try:
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# import setuptools first; this is the most robust way to ensure its embedded distutils is available
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# (the .pth shim should usually work, but this is even more robust)
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import setuptools
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except Exception as ex:
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if sys.version_info >= (3, 12):
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# Python 3.12 has no built-in distutils to fall back on, so any import problem is fatal
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raise Exception("This CFFI feature requires setuptools on Python >= 3.12. The setuptools module is missing or non-functional.") from ex
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# silently ignore on older Pythons (support fallback to stdlib distutils where available)
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else:
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del setuptools
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try:
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# bring in just the bits of distutils we need, whether they really came from setuptools or stdlib-embedded distutils
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from distutils import log, sysconfig
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from distutils.ccompiler import CCompiler
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from distutils.command.build_ext import build_ext
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from distutils.core import Distribution, Extension
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from distutils.dir_util import mkpath
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from distutils.errors import DistutilsSetupError, CompileError, LinkError
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from distutils.log import set_threshold, set_verbosity
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if sys.platform == 'win32':
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from distutils.msvc9compiler import MSVCCompiler
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except Exception as ex:
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if sys.version_info >= (3, 12):
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raise Exception("This CFFI feature requires setuptools on Python >= 3.12. Please install the setuptools package.") from ex
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# anything older, just let the underlying distutils import error fly
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raise Exception("This CFFI feature requires distutils. Please install the distutils or setuptools package.") from ex
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del sys
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