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""" Monkey patching of distutils. """ import sys import distutils.filelist import platform import types import functools from importlib import import_module import inspect import setuptools __all__ = [] """ Everything is private. Contact the project team if you think you need this functionality. """ def _get_mro(cls): """ Returns the bases classes for cls sorted by the MRO. Works around an issue on Jython where inspect.getmro will not return all base classes if multiple classes share the same name. Instead, this function will return a tuple containing the class itself, and the contents of cls.__bases__. See https://github.com/pypa/setuptools/issues/1024. """ if platform.python_implementation() == "Jython": return (cls,) + cls.__bases__ return inspect.getmro(cls) def get_unpatched(item): lookup = ( get_unpatched_class if isinstance(item, type) else get_unpatched_function if isinstance(item, types.FunctionType) else lambda item: None ) return lookup(item) def get_unpatched_class(cls): """Protect against re-patching the distutils if reloaded Also ensures that no other distutils extension monkeypatched the distutils first. """ external_bases = ( cls for cls in _get_mro(cls) if not cls.__module__.startswith('setuptools') ) base = next(external_bases) if not base.__module__.startswith('distutils'): msg = "distutils has already been patched by %r" % cls raise AssertionError(msg) return base def patch_all(): # we can't patch distutils.cmd, alas distutils.core.Command = setuptools.Command has_issue_12885 = sys.version_info <= (3, 5, 3) if has_issue_12885: # fix findall bug in distutils (http://bugs.python.org/issue12885) distutils.filelist.findall = setuptools.findall needs_warehouse = ( sys.version_info < (2, 7, 13) or (3, 4) < sys.version_info < (3, 4, 6) or (3, 5) < sys.version_info <= (3, 5, 3) ) if needs_warehouse: warehouse = 'https://upload.pypi.org/legacy/' distutils.config.PyPIRCCommand.DEFAULT_REPOSITORY = warehouse _patch_distribution_metadata() # Install Distribution throughout the distutils for module in distutils.dist, distutils.core, distutils.cmd: module.Distribution = setuptools.dist.Distribution # Install the patched Extension distutils.core.Extension = setuptools.extension.Extension distutils.extension.Extension = setuptools.extension.Extension if 'distutils.command.build_ext' in sys.modules: sys.modules['distutils.command.build_ext'].Extension = ( setuptools.extension.Extension ) patch_for_msvc_specialized_compiler() def _patch_distribution_metadata(): """Patch write_pkg_file and read_pkg_file for higher metadata standards""" for attr in ('write_pkg_file', 'read_pkg_file', 'get_metadata_version'): new_val = getattr(setuptools.dist, attr) setattr(distutils.dist.DistributionMetadata, attr, new_val) def patch_func(replacement, target_mod, func_name): """ Patch func_name in target_mod with replacement Important - original must be resolved by name to avoid patching an already patched function. """ original = getattr(target_mod, func_name) # set the 'unpatched' attribute on the replacement to # point to the original. vars(replacement).setdefault('unpatched', original) # replace the function in the original module setattr(target_mod, func_name, replacement) def get_unpatched_function(candidate): return getattr(candidate, 'unpatched') def patch_for_msvc_specialized_compiler(): """ Patch functions in distutils to use standalone Microsoft Visual C++ compilers. """ # import late to avoid circular imports on Python < 3.5 msvc = import_module('setuptools.msvc') if platform.system() != 'Windows': # Compilers only available on Microsoft Windows return def patch_params(mod_name, func_name): """ Prepare the parameters for patch_func to patch indicated function. """ repl_prefix = 'msvc9_' if 'msvc9' in mod_name else 'msvc14_' repl_name = repl_prefix + func_name.lstrip('_') repl = getattr(msvc, repl_name) mod = import_module(mod_name) if not hasattr(mod, func_name): raise ImportError(func_name) return repl, mod, func_name # Python 2.7 to 3.4 msvc9 = functools.partial(patch_params, 'distutils.msvc9compiler') # Python 3.5+ msvc14 = functools.partial(patch_params, 'distutils._msvccompiler') try: # Patch distutils.msvc9compiler patch_func(*msvc9('find_vcvarsall')) patch_func(*msvc9('query_vcvarsall')) except ImportError: pass try: # Patch distutils._msvccompiler._get_vc_env patch_func(*msvc14('_get_vc_env')) except ImportError: pass try: # Patch distutils._msvccompiler.gen_lib_options for Numpy patch_func(*msvc14('gen_lib_options')) except ImportError: pass