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annotate lib/python3.8/site-packages/setuptools/installer.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 import glob
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2 import os
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3 import subprocess
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4 import sys
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5 from distutils import log
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6 from distutils.errors import DistutilsError
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7
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8 import pkg_resources
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9 from setuptools.command.easy_install import easy_install
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10 from setuptools.extern import six
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11 from setuptools.wheel import Wheel
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12
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13 from .py31compat import TemporaryDirectory
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14
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15
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16 def _fixup_find_links(find_links):
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17 """Ensure find-links option end-up being a list of strings."""
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18 if isinstance(find_links, six.string_types):
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19 return find_links.split()
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20 assert isinstance(find_links, (tuple, list))
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21 return find_links
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22
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23
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24 def _legacy_fetch_build_egg(dist, req):
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25 """Fetch an egg needed for building.
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26
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27 Legacy path using EasyInstall.
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28 """
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29 tmp_dist = dist.__class__({'script_args': ['easy_install']})
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30 opts = tmp_dist.get_option_dict('easy_install')
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31 opts.clear()
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32 opts.update(
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33 (k, v)
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34 for k, v in dist.get_option_dict('easy_install').items()
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35 if k in (
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36 # don't use any other settings
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37 'find_links', 'site_dirs', 'index_url',
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38 'optimize', 'site_dirs', 'allow_hosts',
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39 ))
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40 if dist.dependency_links:
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41 links = dist.dependency_links[:]
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42 if 'find_links' in opts:
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43 links = _fixup_find_links(opts['find_links'][1]) + links
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44 opts['find_links'] = ('setup', links)
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45 install_dir = dist.get_egg_cache_dir()
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46 cmd = easy_install(
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47 tmp_dist, args=["x"], install_dir=install_dir,
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48 exclude_scripts=True,
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49 always_copy=False, build_directory=None, editable=False,
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50 upgrade=False, multi_version=True, no_report=True, user=False
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51 )
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52 cmd.ensure_finalized()
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53 return cmd.easy_install(req)
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54
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55
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56 def fetch_build_egg(dist, req):
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57 """Fetch an egg needed for building.
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58
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59 Use pip/wheel to fetch/build a wheel."""
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60 # Check pip is available.
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61 try:
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62 pkg_resources.get_distribution('pip')
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63 except pkg_resources.DistributionNotFound:
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64 dist.announce(
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65 'WARNING: The pip package is not available, falling back '
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66 'to EasyInstall for handling setup_requires/test_requires; '
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67 'this is deprecated and will be removed in a future version.',
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68 log.WARN
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69 )
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70 return _legacy_fetch_build_egg(dist, req)
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71 # Warn if wheel is not.
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72 try:
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73 pkg_resources.get_distribution('wheel')
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74 except pkg_resources.DistributionNotFound:
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75 dist.announce('WARNING: The wheel package is not available.', log.WARN)
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76 # Ignore environment markers; if supplied, it is required.
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77 req = strip_marker(req)
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78 # Take easy_install options into account, but do not override relevant
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79 # pip environment variables (like PIP_INDEX_URL or PIP_QUIET); they'll
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80 # take precedence.
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81 opts = dist.get_option_dict('easy_install')
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82 if 'allow_hosts' in opts:
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83 raise DistutilsError('the `allow-hosts` option is not supported '
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84 'when using pip to install requirements.')
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85 if 'PIP_QUIET' in os.environ or 'PIP_VERBOSE' in os.environ:
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86 quiet = False
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87 else:
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88 quiet = True
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89 if 'PIP_INDEX_URL' in os.environ:
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90 index_url = None
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91 elif 'index_url' in opts:
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92 index_url = opts['index_url'][1]
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93 else:
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94 index_url = None
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95 if 'find_links' in opts:
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96 find_links = _fixup_find_links(opts['find_links'][1])[:]
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97 else:
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98 find_links = []
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99 if dist.dependency_links:
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100 find_links.extend(dist.dependency_links)
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101 eggs_dir = os.path.realpath(dist.get_egg_cache_dir())
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102 environment = pkg_resources.Environment()
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103 for egg_dist in pkg_resources.find_distributions(eggs_dir):
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104 if egg_dist in req and environment.can_add(egg_dist):
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105 return egg_dist
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106 with TemporaryDirectory() as tmpdir:
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107 cmd = [
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108 sys.executable, '-m', 'pip',
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109 '--disable-pip-version-check',
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110 'wheel', '--no-deps',
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111 '-w', tmpdir,
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112 ]
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113 if quiet:
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114 cmd.append('--quiet')
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115 if index_url is not None:
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116 cmd.extend(('--index-url', index_url))
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117 if find_links is not None:
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118 for link in find_links:
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119 cmd.extend(('--find-links', link))
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120 # If requirement is a PEP 508 direct URL, directly pass
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121 # the URL to pip, as `req @ url` does not work on the
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122 # command line.
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123 if req.url:
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124 cmd.append(req.url)
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125 else:
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126 cmd.append(str(req))
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127 try:
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128 subprocess.check_call(cmd)
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129 except subprocess.CalledProcessError as e:
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130 raise DistutilsError(str(e))
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131 wheel = Wheel(glob.glob(os.path.join(tmpdir, '*.whl'))[0])
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132 dist_location = os.path.join(eggs_dir, wheel.egg_name())
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133 wheel.install_as_egg(dist_location)
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134 dist_metadata = pkg_resources.PathMetadata(
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135 dist_location, os.path.join(dist_location, 'EGG-INFO'))
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136 dist = pkg_resources.Distribution.from_filename(
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137 dist_location, metadata=dist_metadata)
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138 return dist
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139
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140
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141 def strip_marker(req):
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142 """
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143 Return a new requirement without the environment marker to avoid
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144 calling pip with something like `babel; extra == "i18n"`, which
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145 would always be ignored.
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146 """
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147 # create a copy to avoid mutating the input
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148 req = pkg_resources.Requirement.parse(str(req))
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149 req.marker = None
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150 return req