Mercurial > repos > shellac > sam_consensus_v3
annotate env/lib/python3.9/site-packages/pip/_internal/cli/req_command.py @ 0:4f3585e2f14b draft default tip
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
author | shellac |
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date | Mon, 22 Mar 2021 18:12:50 +0000 |
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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 import cmdoptions |
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13 from pip._internal.cli.base_command import Command |
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14 from pip._internal.cli.command_context import CommandContextMixIn |
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15 from pip._internal.exceptions import CommandError, PreviousBuildDirError |
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16 from pip._internal.index.collector import LinkCollector |
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17 from pip._internal.index.package_finder import PackageFinder |
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18 from pip._internal.models.selection_prefs import SelectionPreferences |
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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_parsed_requirement, |
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25 install_req_from_req_string, |
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26 ) |
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27 from pip._internal.req.req_file import parse_requirements |
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28 from pip._internal.self_outdated_check import pip_self_version_check |
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29 from pip._internal.utils.temp_dir import tempdir_kinds |
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30 from pip._internal.utils.typing import MYPY_CHECK_RUNNING |
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31 |
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32 if MYPY_CHECK_RUNNING: |
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33 from optparse import Values |
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34 from typing import Any, List, Optional, Tuple |
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35 |
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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_install import InstallRequirement |
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39 from pip._internal.req.req_tracker import RequirementTracker |
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40 from pip._internal.resolution.base import BaseResolver |
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41 from pip._internal.utils.temp_dir import TempDirectory, TempDirectoryTypeRegistry |
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42 |
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43 |
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44 logger = logging.getLogger(__name__) |
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45 |
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46 |
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47 class SessionCommandMixin(CommandContextMixIn): |
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48 |
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49 """ |
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50 A class mixin for command classes needing _build_session(). |
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51 """ |
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52 def __init__(self): |
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53 # type: () -> None |
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54 super().__init__() |
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55 self._session = None # Optional[PipSession] |
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56 |
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57 @classmethod |
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58 def _get_index_urls(cls, options): |
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59 # type: (Values) -> Optional[List[str]] |
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60 """Return a list of index urls from user-provided options.""" |
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61 index_urls = [] |
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62 if not getattr(options, "no_index", False): |
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63 url = getattr(options, "index_url", None) |
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64 if url: |
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65 index_urls.append(url) |
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66 urls = getattr(options, "extra_index_urls", None) |
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67 if urls: |
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68 index_urls.extend(urls) |
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69 # Return None rather than an empty list |
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70 return index_urls or None |
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71 |
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72 def get_default_session(self, options): |
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73 # type: (Values) -> PipSession |
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74 """Get a default-managed session.""" |
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75 if self._session is None: |
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76 self._session = self.enter_context(self._build_session(options)) |
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77 # there's no type annotation on requests.Session, so it's |
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78 # automatically ContextManager[Any] and self._session becomes Any, |
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79 # then https://github.com/python/mypy/issues/7696 kicks in |
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80 assert self._session is not None |
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81 return self._session |
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82 |
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83 def _build_session(self, options, retries=None, timeout=None): |
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84 # type: (Values, Optional[int], Optional[int]) -> PipSession |
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85 assert not options.cache_dir or os.path.isabs(options.cache_dir) |
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86 session = PipSession( |
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87 cache=( |
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88 os.path.join(options.cache_dir, "http") |
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89 if options.cache_dir else None |
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90 ), |
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91 retries=retries if retries is not None else options.retries, |
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92 trusted_hosts=options.trusted_hosts, |
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93 index_urls=self._get_index_urls(options), |
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94 ) |
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95 |
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96 # Handle custom ca-bundles from the user |
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97 if options.cert: |
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98 session.verify = options.cert |
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99 |
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100 # Handle SSL client certificate |
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101 if options.client_cert: |
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102 session.cert = options.client_cert |
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103 |
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104 # Handle timeouts |
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105 if options.timeout or timeout: |
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106 session.timeout = ( |
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107 timeout if timeout is not None else options.timeout |
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108 ) |
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109 |
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110 # Handle configured proxies |
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111 if options.proxy: |
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112 session.proxies = { |
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113 "http": options.proxy, |
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114 "https": options.proxy, |
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115 } |
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116 |
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117 # Determine if we can prompt the user for authentication or not |
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118 session.auth.prompting = not options.no_input |
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119 |
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120 return session |
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121 |
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122 |
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123 class IndexGroupCommand(Command, SessionCommandMixin): |
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124 |
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125 """ |
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126 Abstract base class for commands with the index_group options. |
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127 |
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128 This also corresponds to the commands that permit the pip version check. |
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129 """ |
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130 |
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131 def handle_pip_version_check(self, options): |
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132 # type: (Values) -> None |
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133 """ |
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134 Do the pip version check if not disabled. |
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135 |
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136 This overrides the default behavior of not doing the check. |
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137 """ |
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138 # Make sure the index_group options are present. |
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139 assert hasattr(options, 'no_index') |
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140 |
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141 if options.disable_pip_version_check or options.no_index: |
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142 return |
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143 |
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144 # Otherwise, check if we're using the latest version of pip available. |
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145 session = self._build_session( |
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146 options, |
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147 retries=0, |
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148 timeout=min(5, options.timeout) |
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149 ) |
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150 with session: |
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151 pip_self_version_check(session, options) |
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152 |
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153 |
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154 KEEPABLE_TEMPDIR_TYPES = [ |
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155 tempdir_kinds.BUILD_ENV, |
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156 tempdir_kinds.EPHEM_WHEEL_CACHE, |
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157 tempdir_kinds.REQ_BUILD, |
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158 ] |
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159 |
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160 |
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161 def with_cleanup(func): |
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162 # type: (Any) -> Any |
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163 """Decorator for common logic related to managing temporary |
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164 directories. |
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165 """ |
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166 def configure_tempdir_registry(registry): |
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167 # type: (TempDirectoryTypeRegistry) -> None |
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168 for t in KEEPABLE_TEMPDIR_TYPES: |
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169 registry.set_delete(t, False) |
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170 |
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171 def wrapper(self, options, args): |
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172 # type: (RequirementCommand, Values, List[Any]) -> Optional[int] |
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173 assert self.tempdir_registry is not None |
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174 if options.no_clean: |
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175 configure_tempdir_registry(self.tempdir_registry) |
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176 |
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177 try: |
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178 return func(self, options, args) |
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179 except PreviousBuildDirError: |
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180 # This kind of conflict can occur when the user passes an explicit |
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181 # build directory with a pre-existing folder. In that case we do |
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182 # not want to accidentally remove it. |
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183 configure_tempdir_registry(self.tempdir_registry) |
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184 raise |
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185 |
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186 return wrapper |
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187 |
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188 |
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189 class RequirementCommand(IndexGroupCommand): |
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190 |
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191 def __init__(self, *args, **kw): |
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192 # type: (Any, Any) -> None |
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193 super().__init__(*args, **kw) |
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194 |
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195 self.cmd_opts.add_option(cmdoptions.no_clean()) |
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196 |
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197 @staticmethod |
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198 def determine_resolver_variant(options): |
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199 # type: (Values) -> str |
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200 """Determines which resolver should be used, based on the given options.""" |
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201 if "legacy-resolver" in options.deprecated_features_enabled: |
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202 return "legacy" |
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203 |
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204 return "2020-resolver" |
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205 |
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206 @classmethod |
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207 def make_requirement_preparer( |
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208 cls, |
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209 temp_build_dir, # type: TempDirectory |
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210 options, # type: Values |
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211 req_tracker, # type: RequirementTracker |
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212 session, # type: PipSession |
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213 finder, # type: PackageFinder |
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214 use_user_site, # type: bool |
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215 download_dir=None, # type: str |
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216 ): |
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217 # type: (...) -> RequirementPreparer |
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218 """ |
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219 Create a RequirementPreparer instance for the given parameters. |
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220 """ |
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221 temp_build_dir_path = temp_build_dir.path |
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222 assert temp_build_dir_path is not None |
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223 |
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224 resolver_variant = cls.determine_resolver_variant(options) |
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225 if resolver_variant == "2020-resolver": |
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226 lazy_wheel = 'fast-deps' in options.features_enabled |
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227 if lazy_wheel: |
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228 logger.warning( |
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229 'pip is using lazily downloaded wheels using HTTP ' |
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230 'range requests to obtain dependency information. ' |
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231 'This experimental feature is enabled through ' |
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232 '--use-feature=fast-deps and it is not ready for ' |
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233 'production.' |
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234 ) |
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235 else: |
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236 lazy_wheel = False |
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237 if 'fast-deps' in options.features_enabled: |
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238 logger.warning( |
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239 'fast-deps has no effect when used with the legacy resolver.' |
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240 ) |
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241 |
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242 return RequirementPreparer( |
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243 build_dir=temp_build_dir_path, |
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244 src_dir=options.src_dir, |
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245 download_dir=download_dir, |
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246 build_isolation=options.build_isolation, |
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247 req_tracker=req_tracker, |
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248 session=session, |
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249 progress_bar=options.progress_bar, |
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250 finder=finder, |
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251 require_hashes=options.require_hashes, |
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252 use_user_site=use_user_site, |
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253 lazy_wheel=lazy_wheel, |
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254 ) |
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255 |
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256 @classmethod |
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257 def make_resolver( |
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258 cls, |
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259 preparer, # type: RequirementPreparer |
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260 finder, # type: PackageFinder |
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261 options, # type: Values |
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262 wheel_cache=None, # type: Optional[WheelCache] |
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263 use_user_site=False, # type: bool |
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264 ignore_installed=True, # type: bool |
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265 ignore_requires_python=False, # type: bool |
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266 force_reinstall=False, # type: bool |
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267 upgrade_strategy="to-satisfy-only", # type: str |
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268 use_pep517=None, # type: Optional[bool] |
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269 py_version_info=None, # type: Optional[Tuple[int, ...]] |
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270 ): |
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271 # type: (...) -> BaseResolver |
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272 """ |
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273 Create a Resolver instance for the given parameters. |
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274 """ |
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275 make_install_req = partial( |
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276 install_req_from_req_string, |
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277 isolated=options.isolated_mode, |
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278 use_pep517=use_pep517, |
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279 ) |
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280 resolver_variant = cls.determine_resolver_variant(options) |
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281 # The long import name and duplicated invocation is needed to convince |
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282 # Mypy into correctly typechecking. Otherwise it would complain the |
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283 # "Resolver" class being redefined. |
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284 if resolver_variant == "2020-resolver": |
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285 import pip._internal.resolution.resolvelib.resolver |
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286 |
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287 return pip._internal.resolution.resolvelib.resolver.Resolver( |
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288 preparer=preparer, |
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289 finder=finder, |
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290 wheel_cache=wheel_cache, |
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291 make_install_req=make_install_req, |
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292 use_user_site=use_user_site, |
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293 ignore_dependencies=options.ignore_dependencies, |
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294 ignore_installed=ignore_installed, |
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295 ignore_requires_python=ignore_requires_python, |
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296 force_reinstall=force_reinstall, |
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297 upgrade_strategy=upgrade_strategy, |
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298 py_version_info=py_version_info, |
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299 ) |
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300 import pip._internal.resolution.legacy.resolver |
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301 return pip._internal.resolution.legacy.resolver.Resolver( |
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302 preparer=preparer, |
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303 finder=finder, |
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304 wheel_cache=wheel_cache, |
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305 make_install_req=make_install_req, |
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306 use_user_site=use_user_site, |
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307 ignore_dependencies=options.ignore_dependencies, |
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308 ignore_installed=ignore_installed, |
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309 ignore_requires_python=ignore_requires_python, |
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310 force_reinstall=force_reinstall, |
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311 upgrade_strategy=upgrade_strategy, |
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312 py_version_info=py_version_info, |
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313 ) |
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314 |
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315 def get_requirements( |
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316 self, |
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317 args, # type: List[str] |
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318 options, # type: Values |
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319 finder, # type: PackageFinder |
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320 session, # type: PipSession |
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321 ): |
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322 # type: (...) -> List[InstallRequirement] |
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323 """ |
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324 Parse command-line arguments into the corresponding requirements. |
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325 """ |
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326 requirements = [] # type: List[InstallRequirement] |
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327 for filename in options.constraints: |
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328 for parsed_req in parse_requirements( |
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329 filename, |
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330 constraint=True, finder=finder, options=options, |
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331 session=session): |
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332 req_to_add = install_req_from_parsed_requirement( |
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333 parsed_req, |
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334 isolated=options.isolated_mode, |
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335 user_supplied=False, |
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336 ) |
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337 requirements.append(req_to_add) |
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338 |
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339 for req in args: |
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340 req_to_add = install_req_from_line( |
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341 req, None, isolated=options.isolated_mode, |
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342 use_pep517=options.use_pep517, |
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343 user_supplied=True, |
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344 ) |
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345 requirements.append(req_to_add) |
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346 |
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347 for req in options.editables: |
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348 req_to_add = install_req_from_editable( |
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349 req, |
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350 user_supplied=True, |
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351 isolated=options.isolated_mode, |
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352 use_pep517=options.use_pep517, |
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353 ) |
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354 requirements.append(req_to_add) |
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355 |
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356 # NOTE: options.require_hashes may be set if --require-hashes is True |
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357 for filename in options.requirements: |
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358 for parsed_req in parse_requirements( |
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359 filename, |
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360 finder=finder, options=options, session=session): |
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361 req_to_add = install_req_from_parsed_requirement( |
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362 parsed_req, |
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363 isolated=options.isolated_mode, |
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364 use_pep517=options.use_pep517, |
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365 user_supplied=True, |
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366 ) |
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367 requirements.append(req_to_add) |
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368 |
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369 # If any requirement has hash options, enable hash checking. |
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370 if any(req.has_hash_options for req in requirements): |
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371 options.require_hashes = True |
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372 |
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373 if not (args or options.editables or options.requirements): |
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374 opts = {'name': self.name} |
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375 if options.find_links: |
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376 raise CommandError( |
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377 'You must give at least one requirement to {name} ' |
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378 '(maybe you meant "pip {name} {links}"?)'.format( |
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379 **dict(opts, links=' '.join(options.find_links)))) |
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380 else: |
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381 raise CommandError( |
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382 'You must give at least one requirement to {name} ' |
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383 '(see "pip help {name}")'.format(**opts)) |
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384 |
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385 return requirements |
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386 |
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387 @staticmethod |
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388 def trace_basic_info(finder): |
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389 # type: (PackageFinder) -> None |
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390 """ |
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391 Trace basic information about the provided objects. |
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392 """ |
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393 # Display where finder is looking for packages |
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394 search_scope = finder.search_scope |
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395 locations = search_scope.get_formatted_locations() |
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396 if locations: |
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397 logger.info(locations) |
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398 |
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399 def _build_package_finder( |
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400 self, |
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401 options, # type: Values |
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402 session, # type: PipSession |
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403 target_python=None, # type: Optional[TargetPython] |
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404 ignore_requires_python=None, # type: Optional[bool] |
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405 ): |
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406 # type: (...) -> PackageFinder |
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407 """ |
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408 Create a package finder appropriate to this requirement command. |
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409 |
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410 :param ignore_requires_python: Whether to ignore incompatible |
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411 "Requires-Python" values in links. Defaults to False. |
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412 """ |
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413 link_collector = LinkCollector.create(session, options=options) |
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414 selection_prefs = SelectionPreferences( |
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415 allow_yanked=True, |
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416 format_control=options.format_control, |
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417 allow_all_prereleases=options.pre, |
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418 prefer_binary=options.prefer_binary, |
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419 ignore_requires_python=ignore_requires_python, |
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420 ) |
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421 |
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422 return PackageFinder.create( |
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423 link_collector=link_collector, |
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424 selection_prefs=selection_prefs, |
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425 target_python=target_python, |
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426 ) |