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Diffstat (limited to 'setuptools/distutils_patch.py')
-rw-r--r-- | setuptools/distutils_patch.py | 61 |
1 files changed, 0 insertions, 61 deletions
diff --git a/setuptools/distutils_patch.py b/setuptools/distutils_patch.py deleted file mode 100644 index 33f1e7f9..00000000 --- a/setuptools/distutils_patch.py +++ /dev/null @@ -1,61 +0,0 @@ -""" -Ensure that the local copy of distutils is preferred over stdlib. - -See https://github.com/pypa/setuptools/issues/417#issuecomment-392298401 -for more motivation. -""" - -import sys -import re -import os -import importlib -import warnings - - -is_pypy = '__pypy__' in sys.builtin_module_names - - -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.") - - -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] - - -def enabled(): - """ - Allow selection of distutils by environment variable. - """ - which = os.environ.get('SETUPTOOLS_USE_DISTUTILS', 'stdlib') - return which == 'local' - - -def ensure_local_distutils(): - clear_distutils() - distutils = importlib.import_module('setuptools._distutils') - distutils.__name__ = 'distutils' - sys.modules['distutils'] = distutils - - # sanity check that submodules load as expected - core = importlib.import_module('distutils.core') - assert '_distutils' in core.__file__, core.__file__ - - -warn_distutils_present() -if enabled(): - ensure_local_distutils() |