Mercurial > repos > bcclaywell > argo_navis

annotate venv/lib/python2.7/site-packages/pip/commands/install.py @ 0:d67268158946 draft

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planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
author bcclaywell
date Mon, 12 Oct 2015 17:43:33 -0400
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1 from __future__ import absolute_import
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2
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3 import logging
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4 import operator
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5 import os
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6 import tempfile
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7 import shutil
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8 import warnings
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9
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10 from pip.req import InstallRequirement, RequirementSet, parse_requirements
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11 from pip.locations import build_prefix, virtualenv_no_global, distutils_scheme
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12 from pip.basecommand import Command
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13 from pip.index import PackageFinder
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14 from pip.exceptions import (
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15 InstallationError, CommandError, PreviousBuildDirError,
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16 )
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17 from pip import cmdoptions
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18 from pip.utils.build import BuildDirectory
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19 from pip.utils.deprecation import RemovedInPip7Warning, RemovedInPip8Warning
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20
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21
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22 logger = logging.getLogger(__name__)
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23
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24
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25 class InstallCommand(Command):
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26 """
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27 Install packages from:
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28
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29 - PyPI (and other indexes) using requirement specifiers.
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30 - VCS project urls.
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31 - Local project directories.
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32 - Local or remote source archives.
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33
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34 pip also supports installing from "requirements files", which provide
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35 an easy way to specify a whole environment to be installed.
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36 """
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37 name = 'install'
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38
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39 usage = """
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40 %prog [options] <requirement specifier> [package-index-options] ...
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41 %prog [options] -r <requirements file> [package-index-options] ...
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42 %prog [options] [-e] <vcs project url> ...
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43 %prog [options] [-e] <local project path> ...
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44 %prog [options] <archive url/path> ..."""
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45
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46 summary = 'Install packages.'
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47
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48 def __init__(self, *args, **kw):
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49 super(InstallCommand, self).__init__(*args, **kw)
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50
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51 cmd_opts = self.cmd_opts
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52
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53 cmd_opts.add_option(cmdoptions.editable.make())
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54 cmd_opts.add_option(cmdoptions.requirements.make())
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55 cmd_opts.add_option(cmdoptions.build_dir.make())
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56
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57 cmd_opts.add_option(
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58 '-t', '--target',
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59 dest='target_dir',
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60 metavar='dir',
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61 default=None,
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62 help='Install packages into <dir>. '
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63 'By default this will not replace existing files/folders in '
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64 '<dir>. Use --upgrade to replace existing packages in <dir> '
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65 'with new versions.'
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66 )
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67
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68 cmd_opts.add_option(
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69 '-d', '--download', '--download-dir', '--download-directory',
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70 dest='download_dir',
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71 metavar='dir',
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72 default=None,
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73 help=("Download packages into <dir> instead of installing them, "
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74 "regardless of what's already installed."),
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75 )
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76
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77 cmd_opts.add_option(cmdoptions.download_cache.make())
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78 cmd_opts.add_option(cmdoptions.src.make())
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79
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80 cmd_opts.add_option(
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81 '-U', '--upgrade',
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82 dest='upgrade',
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83 action='store_true',
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84 help='Upgrade all specified packages to the newest available '
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85 'version. This process is recursive regardless of whether '
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86 'a dependency is already satisfied.'
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87 )
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88
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89 cmd_opts.add_option(
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90 '--force-reinstall',
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91 dest='force_reinstall',
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92 action='store_true',
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93 help='When upgrading, reinstall all packages even if they are '
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94 'already up-to-date.')
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95
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96 cmd_opts.add_option(
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97 '-I', '--ignore-installed',
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98 dest='ignore_installed',
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99 action='store_true',
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100 help='Ignore the installed packages (reinstalling instead).')
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101
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102 cmd_opts.add_option(cmdoptions.no_deps.make())
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103
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104 cmd_opts.add_option(
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105 '--no-install',
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106 dest='no_install',
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107 action='store_true',
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108 help="DEPRECATED. Download and unpack all packages, but don't "
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109 "actually install them."
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110 )
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111
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112 cmd_opts.add_option(
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113 '--no-download',
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114 dest='no_download',
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115 action="store_true",
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116 help="DEPRECATED. Don't download any packages, just install the "
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117 "ones already downloaded (completes an install run with "
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118 "--no-install).")
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119
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120 cmd_opts.add_option(cmdoptions.install_options.make())
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121 cmd_opts.add_option(cmdoptions.global_options.make())
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122
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123 cmd_opts.add_option(
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124 '--user',
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125 dest='use_user_site',
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126 action='store_true',
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127 help="Install to the Python user install directory for your "
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128 "platform. Typically ~/.local/, or %APPDATA%\Python on "
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129 "Windows. (See the Python documentation for site.USER_BASE "
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130 "for full details.)")
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131
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132 cmd_opts.add_option(
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133 '--egg',
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134 dest='as_egg',
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135 action='store_true',
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136 help="Install packages as eggs, not 'flat', like pip normally "
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137 "does. This option is not about installing *from* eggs. "
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138 "(WARNING: Because this option overrides pip's normal install"
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139 " logic, requirements files may not behave as expected.)")
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140
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141 cmd_opts.add_option(
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142 '--root',
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143 dest='root_path',
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144 metavar='dir',
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145 default=None,
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146 help="Install everything relative to this alternate root "
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147 "directory.")
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148
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149 cmd_opts.add_option(
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150 "--compile",
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151 action="store_true",
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152 dest="compile",
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153 default=True,
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154 help="Compile py files to pyc",
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155 )
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156
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157 cmd_opts.add_option(
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158 "--no-compile",
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159 action="store_false",
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160 dest="compile",
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161 help="Do not compile py files to pyc",
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162 )
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163
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164 cmd_opts.add_option(cmdoptions.use_wheel.make())
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165 cmd_opts.add_option(cmdoptions.no_use_wheel.make())
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166
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167 cmd_opts.add_option(
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168 '--pre',
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169 action='store_true',
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170 default=False,
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171 help="Include pre-release and development versions. By default, "
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172 "pip only finds stable versions.")
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173
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174 cmd_opts.add_option(cmdoptions.no_clean.make())
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175
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176 index_opts = cmdoptions.make_option_group(
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177 cmdoptions.index_group,
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178 self.parser,
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179 )
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180
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181 self.parser.insert_option_group(0, index_opts)
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182 self.parser.insert_option_group(0, cmd_opts)
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183
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184 def _build_package_finder(self, options, index_urls, session):
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185 """
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186 Create a package finder appropriate to this install command.
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187 This method is meant to be overridden by subclasses, not
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188 called directly.
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189 """
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190 return PackageFinder(
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191 find_links=options.find_links,
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192 index_urls=index_urls,
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193 use_wheel=options.use_wheel,
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194 allow_external=options.allow_external,
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195 allow_unverified=options.allow_unverified,
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196 allow_all_external=options.allow_all_external,
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197 trusted_hosts=options.trusted_hosts,
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198 allow_all_prereleases=options.pre,
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199 process_dependency_links=options.process_dependency_links,
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200 session=session,
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201 )
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202
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203 def run(self, options, args):
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204
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205 if (
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206 options.no_install or
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207 options.no_download
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208 ):
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209 warnings.warn(
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210 "--no-install and --no-download are deprecated. "
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211 "See https://github.com/pypa/pip/issues/906.",
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212 RemovedInPip7Warning,
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213 )
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214
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215 # If we have --no-install or --no-download and no --build we use the
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216 # legacy static build dir
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217 if (options.build_dir is None and
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218 (options.no_install or options.no_download)):
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219 options.build_dir = build_prefix
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220
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221 if options.download_dir:
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222 options.no_install = True
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223 options.ignore_installed = True
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224
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225 if options.build_dir:
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226 options.build_dir = os.path.abspath(options.build_dir)
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227
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228 options.src_dir = os.path.abspath(options.src_dir)
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229 install_options = options.install_options or []
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230 if options.use_user_site:
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231 if virtualenv_no_global():
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232 raise InstallationError(
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233 "Can not perform a '--user' install. User site-packages "
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234 "are not visible in this virtualenv."
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235 )
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236 install_options.append('--user')
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237
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238 temp_target_dir = None
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239 if options.target_dir:
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240 options.ignore_installed = True
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241 temp_target_dir = tempfile.mkdtemp()
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242 options.target_dir = os.path.abspath(options.target_dir)
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243 if (os.path.exists(options.target_dir) and not
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244 os.path.isdir(options.target_dir)):
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245 raise CommandError(
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246 "Target path exists but is not a directory, will not "
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247 "continue."
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248 )
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249 install_options.append('--home=' + temp_target_dir)
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250
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251 global_options = options.global_options or []
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252 index_urls = [options.index_url] + options.extra_index_urls
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253 if options.no_index:
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254 logger.info('Ignoring indexes: %s', ','.join(index_urls))
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255 index_urls = []
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256
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257 if options.use_mirrors:
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258 warnings.warn(
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259 "--use-mirrors has been deprecated and will be removed in the "
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260 "future. Explicit uses of --index-url and/or --extra-index-url"
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261 " is suggested.",
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262 RemovedInPip7Warning,
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263 )
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264
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265 if options.mirrors:
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266 warnings.warn(
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267 "--mirrors has been deprecated and will be removed in the "
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268 "future. Explicit uses of --index-url and/or --extra-index-url"
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269 " is suggested.",
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270 RemovedInPip7Warning,
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271 )
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272 index_urls += options.mirrors
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273
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274 if options.download_cache:
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275 warnings.warn(
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276 "--download-cache has been deprecated and will be removed in "
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277 "the future. Pip now automatically uses and configures its "
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278 "cache.",
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279 RemovedInPip8Warning,
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280 )
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281
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282 with self._build_session(options) as session:
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283
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284 finder = self._build_package_finder(options, index_urls, session)
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285
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286 build_delete = (not (options.no_clean or options.build_dir))
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287 with BuildDirectory(options.build_dir,
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288 delete=build_delete) as build_dir:
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289 requirement_set = RequirementSet(
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290 build_dir=build_dir,
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291 src_dir=options.src_dir,
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292 download_dir=options.download_dir,
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293 upgrade=options.upgrade,
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294 as_egg=options.as_egg,
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295 ignore_installed=options.ignore_installed,
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296 ignore_dependencies=options.ignore_dependencies,
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297 force_reinstall=options.force_reinstall,
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298 use_user_site=options.use_user_site,
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299 target_dir=temp_target_dir,
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300 session=session,
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301 pycompile=options.compile,
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302 isolated=options.isolated_mode,
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303 )
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304
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305 for name in args:
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306 requirement_set.add_requirement(
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307 InstallRequirement.from_line(
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308 name, None, isolated=options.isolated_mode,
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309 )
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310 )
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311
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312 for name in options.editables:
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313 requirement_set.add_requirement(
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314 InstallRequirement.from_editable(
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315 name,
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316 default_vcs=options.default_vcs,
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317 isolated=options.isolated_mode,
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318 )
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319 )
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320
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321 for filename in options.requirements:
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322 for req in parse_requirements(
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323 filename,
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324 finder=finder, options=options, session=session):
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325 requirement_set.add_requirement(req)
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326
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327 if not requirement_set.has_requirements:
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328 opts = {'name': self.name}
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329 if options.find_links:
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330 msg = ('You must give at least one requirement to '
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331 '%(name)s (maybe you meant "pip %(name)s '
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332 '%(links)s"?)' %
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333 dict(opts, links=' '.join(options.find_links)))
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334 else:
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335 msg = ('You must give at least one requirement '
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336 'to %(name)s (see "pip help %(name)s")' % opts)
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337 logger.warning(msg)
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338 return
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339
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340 try:
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341 if not options.no_download:
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342 requirement_set.prepare_files(finder)
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343 else:
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344 # This is the only call site of locate_files. Nuke with
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345 # fire.
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346 requirement_set.locate_files()
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347
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348 if not options.no_install:
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349 requirement_set.install(
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350 install_options,
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351 global_options,
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352 root=options.root_path,
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353 )
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354 reqs = sorted(
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355 requirement_set.successfully_installed,
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356 key=operator.attrgetter('name'))
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357 items = []
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358 for req in reqs:
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359 item = req.name
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360 try:
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361 if hasattr(req, 'installed_version'):
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362 if req.installed_version:
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363 item += '-' + req.installed_version
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364 except Exception:
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365 pass
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366 items.append(item)
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367 installed = ' '.join(items)
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368 if installed:
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369 logger.info('Successfully installed %s', installed)
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370 else:
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371 downloaded = ' '.join([
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372 req.name
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373 for req in requirement_set.successfully_downloaded
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374 ])
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375 if downloaded:
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376 logger.info(
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377 'Successfully downloaded %s', downloaded
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378 )
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379 except PreviousBuildDirError:
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380 options.no_clean = True
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381 raise
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382 finally:
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383 # Clean up
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384 if ((not options.no_clean) and
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385 ((not options.no_install) or
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386 options.download_dir)):
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387 requirement_set.cleanup_files()
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388
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389 if options.target_dir:
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390 if not os.path.exists(options.target_dir):
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391 os.makedirs(options.target_dir)
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392
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393 lib_dir = distutils_scheme('', home=temp_target_dir)['purelib']
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394
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395 for item in os.listdir(lib_dir):
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396 target_item_dir = os.path.join(options.target_dir, item)
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397 if os.path.exists(target_item_dir):
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398 if not options.upgrade:
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399 logger.warning(
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400 'Target directory %s already exists. Specify '
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401 '--upgrade to force replacement.',
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402 target_item_dir
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403 )
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404 continue
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405 if os.path.islink(target_item_dir):
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406 logger.warning(
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407 'Target directory %s already exists and is '
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408 'a link. Pip will not automatically replace '
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409 'links, please remove if replacement is '
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410 'desired.',
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411 target_item_dir
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412 )
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413 continue
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414 if os.path.isdir(target_item_dir):
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415 shutil.rmtree(target_item_dir)
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416 else:
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417 os.remove(target_item_dir)
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418
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419 shutil.move(
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420 os.path.join(lib_dir, item),
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421 target_item_dir
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422 )
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423 shutil.rmtree(temp_target_dir)
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424 return requirement_set