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annotate lib/python3.8/site-packages/setuptools/monkey.py @ 0:9e54283cc701 draft

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"planemo upload commit d12c32a45bcd441307e632fca6d9af7d60289d44"
author guerler
date Mon, 27 Jul 2020 03:47:31 -0400
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1 """
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2 Monkey patching of distutils.
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3 """
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4
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5 import sys
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6 import distutils.filelist
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7 import platform
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8 import types
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9 import functools
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10 from importlib import import_module
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11 import inspect
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12
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13 from setuptools.extern import six
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14
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15 import setuptools
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16
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17 __all__ = []
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18 """
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19 Everything is private. Contact the project team
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20 if you think you need this functionality.
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21 """
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22
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23
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24 def _get_mro(cls):
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25 """
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26 Returns the bases classes for cls sorted by the MRO.
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27
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28 Works around an issue on Jython where inspect.getmro will not return all
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29 base classes if multiple classes share the same name. Instead, this
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30 function will return a tuple containing the class itself, and the contents
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31 of cls.__bases__. See https://github.com/pypa/setuptools/issues/1024.
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32 """
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33 if platform.python_implementation() == "Jython":
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34 return (cls,) + cls.__bases__
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35 return inspect.getmro(cls)
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36
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37
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38 def get_unpatched(item):
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39 lookup = (
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40 get_unpatched_class if isinstance(item, six.class_types) else
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41 get_unpatched_function if isinstance(item, types.FunctionType) else
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42 lambda item: None
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43 )
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44 return lookup(item)
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45
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46
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47 def get_unpatched_class(cls):
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48 """Protect against re-patching the distutils if reloaded
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49
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50 Also ensures that no other distutils extension monkeypatched the distutils
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51 first.
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52 """
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53 external_bases = (
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54 cls
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55 for cls in _get_mro(cls)
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56 if not cls.__module__.startswith('setuptools')
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57 )
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58 base = next(external_bases)
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59 if not base.__module__.startswith('distutils'):
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60 msg = "distutils has already been patched by %r" % cls
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61 raise AssertionError(msg)
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62 return base
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63
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64
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65 def patch_all():
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66 # we can't patch distutils.cmd, alas
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67 distutils.core.Command = setuptools.Command
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68
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69 has_issue_12885 = sys.version_info <= (3, 5, 3)
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70
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71 if has_issue_12885:
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72 # fix findall bug in distutils (http://bugs.python.org/issue12885)
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73 distutils.filelist.findall = setuptools.findall
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74
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75 needs_warehouse = (
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76 sys.version_info < (2, 7, 13)
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77 or
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78 (3, 4) < sys.version_info < (3, 4, 6)
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79 or
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80 (3, 5) < sys.version_info <= (3, 5, 3)
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81 )
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82
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83 if needs_warehouse:
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84 warehouse = 'https://upload.pypi.org/legacy/'
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85 distutils.config.PyPIRCCommand.DEFAULT_REPOSITORY = warehouse
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86
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87 _patch_distribution_metadata()
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88
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89 # Install Distribution throughout the distutils
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90 for module in distutils.dist, distutils.core, distutils.cmd:
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91 module.Distribution = setuptools.dist.Distribution
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92
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93 # Install the patched Extension
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94 distutils.core.Extension = setuptools.extension.Extension
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95 distutils.extension.Extension = setuptools.extension.Extension
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96 if 'distutils.command.build_ext' in sys.modules:
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97 sys.modules['distutils.command.build_ext'].Extension = (
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98 setuptools.extension.Extension
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99 )
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100
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101 patch_for_msvc_specialized_compiler()
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102
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103
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104 def _patch_distribution_metadata():
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105 """Patch write_pkg_file and read_pkg_file for higher metadata standards"""
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106 for attr in ('write_pkg_file', 'read_pkg_file', 'get_metadata_version'):
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107 new_val = getattr(setuptools.dist, attr)
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108 setattr(distutils.dist.DistributionMetadata, attr, new_val)
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109
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110
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111 def patch_func(replacement, target_mod, func_name):
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112 """
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113 Patch func_name in target_mod with replacement
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114
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115 Important - original must be resolved by name to avoid
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116 patching an already patched function.
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117 """
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118 original = getattr(target_mod, func_name)
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119
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120 # set the 'unpatched' attribute on the replacement to
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121 # point to the original.
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122 vars(replacement).setdefault('unpatched', original)
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123
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124 # replace the function in the original module
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125 setattr(target_mod, func_name, replacement)
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126
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127
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128 def get_unpatched_function(candidate):
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129 return getattr(candidate, 'unpatched')
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130
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131
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132 def patch_for_msvc_specialized_compiler():
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133 """
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134 Patch functions in distutils to use standalone Microsoft Visual C++
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135 compilers.
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136 """
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137 # import late to avoid circular imports on Python < 3.5
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138 msvc = import_module('setuptools.msvc')
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139
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140 if platform.system() != 'Windows':
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141 # Compilers only availables on Microsoft Windows
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142 return
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143
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144 def patch_params(mod_name, func_name):
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145 """
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146 Prepare the parameters for patch_func to patch indicated function.
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147 """
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148 repl_prefix = 'msvc9_' if 'msvc9' in mod_name else 'msvc14_'
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149 repl_name = repl_prefix + func_name.lstrip('_')
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150 repl = getattr(msvc, repl_name)
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151 mod = import_module(mod_name)
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152 if not hasattr(mod, func_name):
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153 raise ImportError(func_name)
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154 return repl, mod, func_name
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155
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156 # Python 2.7 to 3.4
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157 msvc9 = functools.partial(patch_params, 'distutils.msvc9compiler')
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158
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159 # Python 3.5+
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160 msvc14 = functools.partial(patch_params, 'distutils._msvccompiler')
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161
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162 try:
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163 # Patch distutils.msvc9compiler
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164 patch_func(*msvc9('find_vcvarsall'))
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165 patch_func(*msvc9('query_vcvarsall'))
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166 except ImportError:
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167 pass
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168
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169 try:
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170 # Patch distutils._msvccompiler._get_vc_env
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171 patch_func(*msvc14('_get_vc_env'))
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172 except ImportError:
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173 pass
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174
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175 try:
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176 # Patch distutils._msvccompiler.gen_lib_options for Numpy
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177 patch_func(*msvc14('gen_lib_options'))
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178 except ImportError:
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179 pass