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annotate lib/python3.8/site-packages/setuptools/wheel.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 """Wheels support."""
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2
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3 from distutils.util import get_platform
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4 from distutils import log
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5 import email
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6 import itertools
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7 import os
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8 import posixpath
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9 import re
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10 import zipfile
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11
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12 import pkg_resources
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13 import setuptools
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14 from pkg_resources import parse_version
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15 from setuptools.extern.packaging.tags import sys_tags
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16 from setuptools.extern.packaging.utils import canonicalize_name
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17 from setuptools.extern.six import PY3
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18 from setuptools.command.egg_info import write_requirements
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19
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20
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21 __metaclass__ = type
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22
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23
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24 WHEEL_NAME = re.compile(
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25 r"""^(?P<project_name>.+?)-(?P<version>\d.*?)
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26 ((-(?P<build>\d.*?))?-(?P<py_version>.+?)-(?P<abi>.+?)-(?P<platform>.+?)
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27 )\.whl$""",
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28 re.VERBOSE).match
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29
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30 NAMESPACE_PACKAGE_INIT = '''\
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31 try:
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32 __import__('pkg_resources').declare_namespace(__name__)
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33 except ImportError:
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34 __path__ = __import__('pkgutil').extend_path(__path__, __name__)
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35 '''
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36
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37
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38 def unpack(src_dir, dst_dir):
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39 '''Move everything under `src_dir` to `dst_dir`, and delete the former.'''
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40 for dirpath, dirnames, filenames in os.walk(src_dir):
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41 subdir = os.path.relpath(dirpath, src_dir)
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42 for f in filenames:
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43 src = os.path.join(dirpath, f)
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44 dst = os.path.join(dst_dir, subdir, f)
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45 os.renames(src, dst)
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46 for n, d in reversed(list(enumerate(dirnames))):
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47 src = os.path.join(dirpath, d)
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48 dst = os.path.join(dst_dir, subdir, d)
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49 if not os.path.exists(dst):
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50 # Directory does not exist in destination,
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51 # rename it and prune it from os.walk list.
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52 os.renames(src, dst)
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53 del dirnames[n]
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54 # Cleanup.
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55 for dirpath, dirnames, filenames in os.walk(src_dir, topdown=True):
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56 assert not filenames
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57 os.rmdir(dirpath)
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58
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59
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60 class Wheel:
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61
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62 def __init__(self, filename):
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63 match = WHEEL_NAME(os.path.basename(filename))
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64 if match is None:
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65 raise ValueError('invalid wheel name: %r' % filename)
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66 self.filename = filename
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67 for k, v in match.groupdict().items():
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68 setattr(self, k, v)
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69
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70 def tags(self):
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71 '''List tags (py_version, abi, platform) supported by this wheel.'''
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72 return itertools.product(
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73 self.py_version.split('.'),
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74 self.abi.split('.'),
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75 self.platform.split('.'),
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76 )
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77
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78 def is_compatible(self):
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79 '''Is the wheel is compatible with the current platform?'''
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80 supported_tags = set(
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81 (t.interpreter, t.abi, t.platform) for t in sys_tags())
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82 return next((True for t in self.tags() if t in supported_tags), False)
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83
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84 def egg_name(self):
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85 return pkg_resources.Distribution(
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86 project_name=self.project_name, version=self.version,
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87 platform=(None if self.platform == 'any' else get_platform()),
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88 ).egg_name() + '.egg'
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89
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90 def get_dist_info(self, zf):
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91 # find the correct name of the .dist-info dir in the wheel file
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92 for member in zf.namelist():
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93 dirname = posixpath.dirname(member)
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94 if (dirname.endswith('.dist-info') and
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95 canonicalize_name(dirname).startswith(
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96 canonicalize_name(self.project_name))):
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97 return dirname
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98 raise ValueError("unsupported wheel format. .dist-info not found")
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99
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100 def install_as_egg(self, destination_eggdir):
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101 '''Install wheel as an egg directory.'''
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102 with zipfile.ZipFile(self.filename) as zf:
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103 self._install_as_egg(destination_eggdir, zf)
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104
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105 def _install_as_egg(self, destination_eggdir, zf):
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106 dist_basename = '%s-%s' % (self.project_name, self.version)
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107 dist_info = self.get_dist_info(zf)
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108 dist_data = '%s.data' % dist_basename
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109 egg_info = os.path.join(destination_eggdir, 'EGG-INFO')
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110
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111 self._convert_metadata(zf, destination_eggdir, dist_info, egg_info)
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112 self._move_data_entries(destination_eggdir, dist_data)
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113 self._fix_namespace_packages(egg_info, destination_eggdir)
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114
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115 @staticmethod
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116 def _convert_metadata(zf, destination_eggdir, dist_info, egg_info):
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117 def get_metadata(name):
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118 with zf.open(posixpath.join(dist_info, name)) as fp:
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119 value = fp.read().decode('utf-8') if PY3 else fp.read()
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120 return email.parser.Parser().parsestr(value)
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121
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122 wheel_metadata = get_metadata('WHEEL')
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123 # Check wheel format version is supported.
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124 wheel_version = parse_version(wheel_metadata.get('Wheel-Version'))
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125 wheel_v1 = (
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126 parse_version('1.0') <= wheel_version < parse_version('2.0dev0')
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127 )
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128 if not wheel_v1:
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129 raise ValueError(
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130 'unsupported wheel format version: %s' % wheel_version)
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131 # Extract to target directory.
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132 os.mkdir(destination_eggdir)
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133 zf.extractall(destination_eggdir)
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134 # Convert metadata.
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135 dist_info = os.path.join(destination_eggdir, dist_info)
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136 dist = pkg_resources.Distribution.from_location(
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137 destination_eggdir, dist_info,
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138 metadata=pkg_resources.PathMetadata(destination_eggdir, dist_info),
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139 )
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140
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141 # Note: Evaluate and strip markers now,
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142 # as it's difficult to convert back from the syntax:
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143 # foobar; "linux" in sys_platform and extra == 'test'
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144 def raw_req(req):
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145 req.marker = None
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146 return str(req)
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147 install_requires = list(sorted(map(raw_req, dist.requires())))
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148 extras_require = {
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149 extra: sorted(
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150 req
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151 for req in map(raw_req, dist.requires((extra,)))
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152 if req not in install_requires
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153 )
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154 for extra in dist.extras
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155 }
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156 os.rename(dist_info, egg_info)
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157 os.rename(
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158 os.path.join(egg_info, 'METADATA'),
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159 os.path.join(egg_info, 'PKG-INFO'),
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160 )
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161 setup_dist = setuptools.Distribution(
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162 attrs=dict(
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163 install_requires=install_requires,
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164 extras_require=extras_require,
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165 ),
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166 )
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167 # Temporarily disable info traces.
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168 log_threshold = log._global_log.threshold
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169 log.set_threshold(log.WARN)
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170 try:
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171 write_requirements(
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172 setup_dist.get_command_obj('egg_info'),
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173 None,
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174 os.path.join(egg_info, 'requires.txt'),
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175 )
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176 finally:
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177 log.set_threshold(log_threshold)
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178
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179 @staticmethod
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180 def _move_data_entries(destination_eggdir, dist_data):
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181 """Move data entries to their correct location."""
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182 dist_data = os.path.join(destination_eggdir, dist_data)
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183 dist_data_scripts = os.path.join(dist_data, 'scripts')
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184 if os.path.exists(dist_data_scripts):
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185 egg_info_scripts = os.path.join(
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186 destination_eggdir, 'EGG-INFO', 'scripts')
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187 os.mkdir(egg_info_scripts)
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188 for entry in os.listdir(dist_data_scripts):
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189 # Remove bytecode, as it's not properly handled
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190 # during easy_install scripts install phase.
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191 if entry.endswith('.pyc'):
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192 os.unlink(os.path.join(dist_data_scripts, entry))
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193 else:
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194 os.rename(
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195 os.path.join(dist_data_scripts, entry),
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196 os.path.join(egg_info_scripts, entry),
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197 )
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198 os.rmdir(dist_data_scripts)
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199 for subdir in filter(os.path.exists, (
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200 os.path.join(dist_data, d)
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201 for d in ('data', 'headers', 'purelib', 'platlib')
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202 )):
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203 unpack(subdir, destination_eggdir)
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204 if os.path.exists(dist_data):
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205 os.rmdir(dist_data)
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206
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207 @staticmethod
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208 def _fix_namespace_packages(egg_info, destination_eggdir):
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209 namespace_packages = os.path.join(
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210 egg_info, 'namespace_packages.txt')
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211 if os.path.exists(namespace_packages):
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212 with open(namespace_packages) as fp:
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213 namespace_packages = fp.read().split()
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214 for mod in namespace_packages:
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215 mod_dir = os.path.join(destination_eggdir, *mod.split('.'))
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216 mod_init = os.path.join(mod_dir, '__init__.py')
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217 if not os.path.exists(mod_dir):
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218 os.mkdir(mod_dir)
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219 if not os.path.exists(mod_init):
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220 with open(mod_init, 'w') as fp:
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221 fp.write(NAMESPACE_PACKAGE_INIT)