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Move all but a small shim in override into _distutils_hack
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""" | ||
Ensure that the local copy of distutils is preferred over stdlib. | ||
See https://github.com/pypa/setuptools/issues/417#issuecomment-392298401 | ||
for more motivation. | ||
""" | ||
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import sys | ||
import re | ||
import importlib | ||
import warnings | ||
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from . import enabled | ||
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is_pypy = '__pypy__' in sys.builtin_module_names | ||
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def warn_distutils_present(): | ||
if 'distutils' not in sys.modules: | ||
return | ||
if is_pypy and sys.version_info < (3, 7): | ||
# PyPy for 3.6 unconditionally imports distutils, so bypass the warning | ||
# https://foss.heptapod.net/pypy/pypy/-/blob/be829135bc0d758997b3566062999ee8b23872b4/lib-python/3/site.py#L250 | ||
return | ||
warnings.warn( | ||
"Distutils was imported before Setuptools. This usage is discouraged " | ||
"and may exhibit undesirable behaviors or errors. Please use " | ||
"Setuptools' objects directly or at least import Setuptools first.") | ||
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def clear_distutils(): | ||
if 'distutils' not in sys.modules: | ||
return | ||
warnings.warn("Setuptools is replacing distutils.") | ||
mods = [name for name in sys.modules if re.match(r'distutils\b', name)] | ||
for name in mods: | ||
del sys.modules[name] | ||
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def ensure_local_distutils(): | ||
clear_distutils() | ||
distutils = importlib.import_module('setuptools._distutils') | ||
distutils.__name__ = 'distutils' | ||
sys.modules['distutils'] = distutils | ||
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# sanity check that submodules load as expected | ||
core = importlib.import_module('distutils.core') | ||
assert '_distutils' in core.__file__, core.__file__ | ||
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warn_distutils_present() | ||
if enabled(): | ||
ensure_local_distutils() | ||
__import__('_distutils_hack').do_override() |