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annotate lib/python3.8/site-packages/pip/_internal/cli/req_command.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 """Contains the Command base classes that depend on PipSession.
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2
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3 The classes in this module are in a separate module so the commands not
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4 needing download / PackageFinder capability don't unnecessarily import the
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5 PackageFinder machinery and all its vendored dependencies, etc.
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6 """
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7
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8 import logging
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9 import os
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10 from functools import partial
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11
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12 from pip._internal.cli.base_command import Command
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13 from pip._internal.cli.command_context import CommandContextMixIn
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14 from pip._internal.exceptions import CommandError
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15 from pip._internal.index.package_finder import PackageFinder
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16 from pip._internal.legacy_resolve import Resolver
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17 from pip._internal.models.selection_prefs import SelectionPreferences
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18 from pip._internal.network.download import Downloader
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19 from pip._internal.network.session import PipSession
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20 from pip._internal.operations.prepare import RequirementPreparer
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21 from pip._internal.req.constructors import (
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22 install_req_from_editable,
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23 install_req_from_line,
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24 install_req_from_req_string,
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25 )
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26 from pip._internal.req.req_file import parse_requirements
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27 from pip._internal.self_outdated_check import (
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28 make_link_collector,
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29 pip_self_version_check,
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30 )
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31 from pip._internal.utils.typing import MYPY_CHECK_RUNNING
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32
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33 if MYPY_CHECK_RUNNING:
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34 from optparse import Values
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35 from typing import List, Optional, Tuple
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36 from pip._internal.cache import WheelCache
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37 from pip._internal.models.target_python import TargetPython
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38 from pip._internal.req.req_set import RequirementSet
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39 from pip._internal.req.req_tracker import RequirementTracker
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40 from pip._internal.utils.temp_dir import TempDirectory
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41
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42 logger = logging.getLogger(__name__)
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43
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44
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45 class SessionCommandMixin(CommandContextMixIn):
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46
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47 """
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48 A class mixin for command classes needing _build_session().
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49 """
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50 def __init__(self):
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51 # type: () -> None
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52 super(SessionCommandMixin, self).__init__()
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53 self._session = None # Optional[PipSession]
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54
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55 @classmethod
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56 def _get_index_urls(cls, options):
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57 # type: (Values) -> Optional[List[str]]
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58 """Return a list of index urls from user-provided options."""
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59 index_urls = []
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60 if not getattr(options, "no_index", False):
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61 url = getattr(options, "index_url", None)
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62 if url:
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63 index_urls.append(url)
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64 urls = getattr(options, "extra_index_urls", None)
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65 if urls:
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66 index_urls.extend(urls)
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67 # Return None rather than an empty list
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68 return index_urls or None
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69
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70 def get_default_session(self, options):
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71 # type: (Values) -> PipSession
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72 """Get a default-managed session."""
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73 if self._session is None:
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74 self._session = self.enter_context(self._build_session(options))
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75 # there's no type annotation on requests.Session, so it's
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76 # automatically ContextManager[Any] and self._session becomes Any,
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77 # then https://github.com/python/mypy/issues/7696 kicks in
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78 assert self._session is not None
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79 return self._session
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80
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81 def _build_session(self, options, retries=None, timeout=None):
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82 # type: (Values, Optional[int], Optional[int]) -> PipSession
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83 assert not options.cache_dir or os.path.isabs(options.cache_dir)
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84 session = PipSession(
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85 cache=(
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86 os.path.join(options.cache_dir, "http")
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87 if options.cache_dir else None
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88 ),
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89 retries=retries if retries is not None else options.retries,
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90 trusted_hosts=options.trusted_hosts,
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91 index_urls=self._get_index_urls(options),
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92 )
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93
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94 # Handle custom ca-bundles from the user
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95 if options.cert:
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96 session.verify = options.cert
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97
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98 # Handle SSL client certificate
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99 if options.client_cert:
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100 session.cert = options.client_cert
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101
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102 # Handle timeouts
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103 if options.timeout or timeout:
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104 session.timeout = (
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105 timeout if timeout is not None else options.timeout
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106 )
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107
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108 # Handle configured proxies
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109 if options.proxy:
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110 session.proxies = {
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111 "http": options.proxy,
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112 "https": options.proxy,
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113 }
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114
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115 # Determine if we can prompt the user for authentication or not
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116 session.auth.prompting = not options.no_input
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117
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118 return session
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119
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120
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121 class IndexGroupCommand(Command, SessionCommandMixin):
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122
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123 """
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124 Abstract base class for commands with the index_group options.
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125
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126 This also corresponds to the commands that permit the pip version check.
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127 """
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128
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129 def handle_pip_version_check(self, options):
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130 # type: (Values) -> None
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131 """
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132 Do the pip version check if not disabled.
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133
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134 This overrides the default behavior of not doing the check.
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135 """
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136 # Make sure the index_group options are present.
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137 assert hasattr(options, 'no_index')
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138
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139 if options.disable_pip_version_check or options.no_index:
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140 return
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141
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142 # Otherwise, check if we're using the latest version of pip available.
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143 session = self._build_session(
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144 options,
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145 retries=0,
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146 timeout=min(5, options.timeout)
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147 )
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148 with session:
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149 pip_self_version_check(session, options)
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150
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151
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152 class RequirementCommand(IndexGroupCommand):
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153
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154 @staticmethod
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155 def make_requirement_preparer(
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156 temp_build_dir, # type: TempDirectory
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157 options, # type: Values
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158 req_tracker, # type: RequirementTracker
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159 session, # type: PipSession
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160 finder, # type: PackageFinder
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161 use_user_site, # type: bool
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162 download_dir=None, # type: str
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163 wheel_download_dir=None, # type: str
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164 ):
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165 # type: (...) -> RequirementPreparer
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166 """
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167 Create a RequirementPreparer instance for the given parameters.
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168 """
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169 downloader = Downloader(session, progress_bar=options.progress_bar)
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170
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171 temp_build_dir_path = temp_build_dir.path
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172 assert temp_build_dir_path is not None
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173
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174 return RequirementPreparer(
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175 build_dir=temp_build_dir_path,
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176 src_dir=options.src_dir,
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177 download_dir=download_dir,
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178 wheel_download_dir=wheel_download_dir,
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179 build_isolation=options.build_isolation,
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180 req_tracker=req_tracker,
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181 downloader=downloader,
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182 finder=finder,
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183 require_hashes=options.require_hashes,
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184 use_user_site=use_user_site,
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185 )
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186
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187 @staticmethod
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188 def make_resolver(
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189 preparer, # type: RequirementPreparer
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190 finder, # type: PackageFinder
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191 options, # type: Values
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192 wheel_cache=None, # type: Optional[WheelCache]
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193 use_user_site=False, # type: bool
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194 ignore_installed=True, # type: bool
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195 ignore_requires_python=False, # type: bool
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196 force_reinstall=False, # type: bool
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197 upgrade_strategy="to-satisfy-only", # type: str
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198 use_pep517=None, # type: Optional[bool]
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199 py_version_info=None # type: Optional[Tuple[int, ...]]
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200 ):
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201 # type: (...) -> Resolver
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202 """
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203 Create a Resolver instance for the given parameters.
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204 """
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205 make_install_req = partial(
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206 install_req_from_req_string,
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207 isolated=options.isolated_mode,
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208 wheel_cache=wheel_cache,
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209 use_pep517=use_pep517,
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210 )
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211 return Resolver(
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212 preparer=preparer,
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213 finder=finder,
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214 make_install_req=make_install_req,
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215 use_user_site=use_user_site,
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216 ignore_dependencies=options.ignore_dependencies,
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217 ignore_installed=ignore_installed,
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218 ignore_requires_python=ignore_requires_python,
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219 force_reinstall=force_reinstall,
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220 upgrade_strategy=upgrade_strategy,
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221 py_version_info=py_version_info,
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222 )
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223
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224 def populate_requirement_set(
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225 self,
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226 requirement_set, # type: RequirementSet
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227 args, # type: List[str]
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228 options, # type: Values
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229 finder, # type: PackageFinder
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230 session, # type: PipSession
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231 wheel_cache, # type: Optional[WheelCache]
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232 ):
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233 # type: (...) -> None
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234 """
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235 Marshal cmd line args into a requirement set.
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236 """
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237 for filename in options.constraints:
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238 for req_to_add in parse_requirements(
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239 filename,
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240 constraint=True, finder=finder, options=options,
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241 session=session, wheel_cache=wheel_cache):
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242 req_to_add.is_direct = True
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243 requirement_set.add_requirement(req_to_add)
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244
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245 for req in args:
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246 req_to_add = install_req_from_line(
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247 req, None, isolated=options.isolated_mode,
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248 use_pep517=options.use_pep517,
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249 wheel_cache=wheel_cache
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250 )
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251 req_to_add.is_direct = True
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252 requirement_set.add_requirement(req_to_add)
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253
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254 for req in options.editables:
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255 req_to_add = install_req_from_editable(
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256 req,
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257 isolated=options.isolated_mode,
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258 use_pep517=options.use_pep517,
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259 wheel_cache=wheel_cache
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260 )
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261 req_to_add.is_direct = True
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262 requirement_set.add_requirement(req_to_add)
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263
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264 # NOTE: options.require_hashes may be set if --require-hashes is True
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265 for filename in options.requirements:
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266 for req_to_add in parse_requirements(
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267 filename,
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268 finder=finder, options=options, session=session,
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269 wheel_cache=wheel_cache,
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270 use_pep517=options.use_pep517):
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271 req_to_add.is_direct = True
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272 requirement_set.add_requirement(req_to_add)
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273
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274 # If any requirement has hash options, enable hash checking.
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275 requirements = (
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276 requirement_set.unnamed_requirements +
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277 list(requirement_set.requirements.values())
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278 )
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279 if any(req.has_hash_options for req in requirements):
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280 options.require_hashes = True
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281
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282 if not (args or options.editables or options.requirements):
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283 opts = {'name': self.name}
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284 if options.find_links:
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285 raise CommandError(
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286 'You must give at least one requirement to %(name)s '
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287 '(maybe you meant "pip %(name)s %(links)s"?)' %
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288 dict(opts, links=' '.join(options.find_links)))
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289 else:
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290 raise CommandError(
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291 'You must give at least one requirement to %(name)s '
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292 '(see "pip help %(name)s")' % opts)
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293
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294 @staticmethod
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295 def trace_basic_info(finder):
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296 # type: (PackageFinder) -> None
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297 """
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298 Trace basic information about the provided objects.
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299 """
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300 # Display where finder is looking for packages
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301 search_scope = finder.search_scope
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302 locations = search_scope.get_formatted_locations()
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303 if locations:
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304 logger.info(locations)
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305
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306 def _build_package_finder(
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307 self,
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308 options, # type: Values
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309 session, # type: PipSession
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310 target_python=None, # type: Optional[TargetPython]
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311 ignore_requires_python=None, # type: Optional[bool]
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312 ):
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313 # type: (...) -> PackageFinder
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314 """
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315 Create a package finder appropriate to this requirement command.
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316
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317 :param ignore_requires_python: Whether to ignore incompatible
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318 "Requires-Python" values in links. Defaults to False.
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319 """
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320 link_collector = make_link_collector(session, options=options)
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321 selection_prefs = SelectionPreferences(
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322 allow_yanked=True,
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323 format_control=options.format_control,
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324 allow_all_prereleases=options.pre,
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325 prefer_binary=options.prefer_binary,
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326 ignore_requires_python=ignore_requires_python,
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327 )
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328
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329 return PackageFinder.create(
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330 link_collector=link_collector,
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331 selection_prefs=selection_prefs,
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332 target_python=target_python,
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333 )