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annotate lib/python3.8/site-packages/pip/_internal/self_outdated_check.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 # The following comment should be removed at some point in the future.
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2 # mypy: disallow-untyped-defs=False
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3
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4 from __future__ import absolute_import
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5
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6 import datetime
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7 import hashlib
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8 import json
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9 import logging
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10 import os.path
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11 import sys
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12
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13 from pip._vendor import pkg_resources
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14 from pip._vendor.packaging import version as packaging_version
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15 from pip._vendor.six import ensure_binary
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16
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17 from pip._internal.index.collector import LinkCollector
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18 from pip._internal.index.package_finder import PackageFinder
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19 from pip._internal.models.search_scope import SearchScope
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20 from pip._internal.models.selection_prefs import SelectionPreferences
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21 from pip._internal.utils.filesystem import (
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22 adjacent_tmp_file,
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23 check_path_owner,
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24 replace,
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25 )
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26 from pip._internal.utils.misc import (
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27 ensure_dir,
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28 get_installed_version,
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29 redact_auth_from_url,
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30 )
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31 from pip._internal.utils.packaging import get_installer
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32 from pip._internal.utils.typing import MYPY_CHECK_RUNNING
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33
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34 if MYPY_CHECK_RUNNING:
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35 import optparse
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36 from optparse import Values
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37 from typing import Any, Dict, Text, Union
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38
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39 from pip._internal.network.session import PipSession
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40
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41
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42 SELFCHECK_DATE_FMT = "%Y-%m-%dT%H:%M:%SZ"
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43
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44
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45 logger = logging.getLogger(__name__)
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46
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47
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48 def make_link_collector(
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49 session, # type: PipSession
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50 options, # type: Values
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51 suppress_no_index=False, # type: bool
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52 ):
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53 # type: (...) -> LinkCollector
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54 """
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55 :param session: The Session to use to make requests.
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56 :param suppress_no_index: Whether to ignore the --no-index option
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57 when constructing the SearchScope object.
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58 """
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59 index_urls = [options.index_url] + options.extra_index_urls
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60 if options.no_index and not suppress_no_index:
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61 logger.debug(
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62 'Ignoring indexes: %s',
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63 ','.join(redact_auth_from_url(url) for url in index_urls),
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64 )
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65 index_urls = []
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66
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67 # Make sure find_links is a list before passing to create().
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68 find_links = options.find_links or []
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69
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70 search_scope = SearchScope.create(
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71 find_links=find_links, index_urls=index_urls,
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72 )
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73
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74 link_collector = LinkCollector(session=session, search_scope=search_scope)
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75
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76 return link_collector
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77
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78
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79 def _get_statefile_name(key):
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80 # type: (Union[str, Text]) -> str
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81 key_bytes = ensure_binary(key)
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82 name = hashlib.sha224(key_bytes).hexdigest()
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83 return name
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84
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85
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86 class SelfCheckState(object):
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87 def __init__(self, cache_dir):
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88 # type: (str) -> None
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89 self.state = {} # type: Dict[str, Any]
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90 self.statefile_path = None
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91
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92 # Try to load the existing state
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93 if cache_dir:
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94 self.statefile_path = os.path.join(
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95 cache_dir, "selfcheck", _get_statefile_name(self.key)
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96 )
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97 try:
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98 with open(self.statefile_path) as statefile:
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99 self.state = json.load(statefile)
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100 except (IOError, ValueError, KeyError):
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101 # Explicitly suppressing exceptions, since we don't want to
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102 # error out if the cache file is invalid.
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103 pass
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104
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105 @property
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106 def key(self):
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107 return sys.prefix
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108
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109 def save(self, pypi_version, current_time):
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110 # type: (str, datetime.datetime) -> None
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111 # If we do not have a path to cache in, don't bother saving.
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112 if not self.statefile_path:
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113 return
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114
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115 # Check to make sure that we own the directory
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116 if not check_path_owner(os.path.dirname(self.statefile_path)):
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117 return
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118
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119 # Now that we've ensured the directory is owned by this user, we'll go
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120 # ahead and make sure that all our directories are created.
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121 ensure_dir(os.path.dirname(self.statefile_path))
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122
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123 state = {
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124 # Include the key so it's easy to tell which pip wrote the
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125 # file.
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126 "key": self.key,
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127 "last_check": current_time.strftime(SELFCHECK_DATE_FMT),
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128 "pypi_version": pypi_version,
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129 }
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130
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131 text = json.dumps(state, sort_keys=True, separators=(",", ":"))
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132
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diff changeset
133 with adjacent_tmp_file(self.statefile_path) as f:
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134 f.write(ensure_binary(text))
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135
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guerler
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diff changeset
136 try:
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137 # Since we have a prefix-specific state file, we can just
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138 # overwrite whatever is there, no need to check.
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139 replace(f.name, self.statefile_path)
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diff changeset
140 except OSError:
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guerler
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141 # Best effort.
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142 pass
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143
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144
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145 def was_installed_by_pip(pkg):
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146 # type: (str) -> bool
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147 """Checks whether pkg was installed by pip
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148
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149 This is used not to display the upgrade message when pip is in fact
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150 installed by system package manager, such as dnf on Fedora.
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151 """
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152 try:
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153 dist = pkg_resources.get_distribution(pkg)
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154 return "pip" == get_installer(dist)
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155 except pkg_resources.DistributionNotFound:
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156 return False
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157
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158
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159 def pip_self_version_check(session, options):
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160 # type: (PipSession, optparse.Values) -> None
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161 """Check for an update for pip.
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162
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163 Limit the frequency of checks to once per week. State is stored either in
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164 the active virtualenv or in the user's USER_CACHE_DIR keyed off the prefix
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165 of the pip script path.
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166 """
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167 installed_version = get_installed_version("pip")
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168 if not installed_version:
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169 return
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guerler
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170
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171 pip_version = packaging_version.parse(installed_version)
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172 pypi_version = None
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173
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guerler
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174 try:
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175 state = SelfCheckState(cache_dir=options.cache_dir)
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176
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177 current_time = datetime.datetime.utcnow()
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178 # Determine if we need to refresh the state
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179 if "last_check" in state.state and "pypi_version" in state.state:
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180 last_check = datetime.datetime.strptime(
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181 state.state["last_check"],
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182 SELFCHECK_DATE_FMT
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183 )
9e54283cc701 "planemo upload commit d12c32a45bcd441307e632fca6d9af7d60289d44"
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184 if (current_time - last_check).total_seconds() < 7 * 24 * 60 * 60:
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185 pypi_version = state.state["pypi_version"]
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186
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187 # Refresh the version if we need to or just see if we need to warn
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188 if pypi_version is None:
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189 # Lets use PackageFinder to see what the latest pip version is
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190 link_collector = make_link_collector(
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191 session,
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192 options=options,
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193 suppress_no_index=True,
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194 )
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guerler
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195
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196 # Pass allow_yanked=False so we don't suggest upgrading to a
9e54283cc701 "planemo upload commit d12c32a45bcd441307e632fca6d9af7d60289d44"
guerler
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197 # yanked version.
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198 selection_prefs = SelectionPreferences(
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199 allow_yanked=False,
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200 allow_all_prereleases=False, # Explicitly set to False
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guerler
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diff changeset
201 )
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guerler
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diff changeset
202
9e54283cc701 "planemo upload commit d12c32a45bcd441307e632fca6d9af7d60289d44"
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203 finder = PackageFinder.create(
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diff changeset
204 link_collector=link_collector,
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diff changeset
205 selection_prefs=selection_prefs,
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guerler
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diff changeset
206 )
9e54283cc701 "planemo upload commit d12c32a45bcd441307e632fca6d9af7d60289d44"
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diff changeset
207 best_candidate = finder.find_best_candidate("pip").best_candidate
9e54283cc701 "planemo upload commit d12c32a45bcd441307e632fca6d9af7d60289d44"
guerler
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diff changeset
208 if best_candidate is None:
9e54283cc701 "planemo upload commit d12c32a45bcd441307e632fca6d9af7d60289d44"
guerler
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diff changeset
209 return
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diff changeset
210 pypi_version = str(best_candidate.version)
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guerler
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diff changeset
211
9e54283cc701 "planemo upload commit d12c32a45bcd441307e632fca6d9af7d60289d44"
guerler
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diff changeset
212 # save that we've performed a check
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diff changeset
213 state.save(pypi_version, current_time)
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guerler
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diff changeset
214
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diff changeset
215 remote_version = packaging_version.parse(pypi_version)
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guerler
parents:
diff changeset
216
9e54283cc701 "planemo upload commit d12c32a45bcd441307e632fca6d9af7d60289d44"
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diff changeset
217 local_version_is_older = (
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guerler
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diff changeset
218 pip_version < remote_version and
9e54283cc701 "planemo upload commit d12c32a45bcd441307e632fca6d9af7d60289d44"
guerler
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diff changeset
219 pip_version.base_version != remote_version.base_version and
9e54283cc701 "planemo upload commit d12c32a45bcd441307e632fca6d9af7d60289d44"
guerler
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diff changeset
220 was_installed_by_pip('pip')
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guerler
parents:
diff changeset
221 )
9e54283cc701 "planemo upload commit d12c32a45bcd441307e632fca6d9af7d60289d44"
guerler
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diff changeset
222
9e54283cc701 "planemo upload commit d12c32a45bcd441307e632fca6d9af7d60289d44"
guerler
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diff changeset
223 # Determine if our pypi_version is older
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guerler
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diff changeset
224 if not local_version_is_older:
9e54283cc701 "planemo upload commit d12c32a45bcd441307e632fca6d9af7d60289d44"
guerler
parents:
diff changeset
225 return
9e54283cc701 "planemo upload commit d12c32a45bcd441307e632fca6d9af7d60289d44"
guerler
parents:
diff changeset
226
9e54283cc701 "planemo upload commit d12c32a45bcd441307e632fca6d9af7d60289d44"
guerler
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diff changeset
227 # We cannot tell how the current pip is available in the current
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guerler
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228 # command context, so be pragmatic here and suggest the command
9e54283cc701 "planemo upload commit d12c32a45bcd441307e632fca6d9af7d60289d44"
guerler
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229 # that's always available. This does not accommodate spaces in
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guerler
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diff changeset
230 # `sys.executable`.
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231 pip_cmd = "{} -m pip".format(sys.executable)
9e54283cc701 "planemo upload commit d12c32a45bcd441307e632fca6d9af7d60289d44"
guerler
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diff changeset
232 logger.warning(
9e54283cc701 "planemo upload commit d12c32a45bcd441307e632fca6d9af7d60289d44"
guerler
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diff changeset
233 "You are using pip version %s; however, version %s is "
9e54283cc701 "planemo upload commit d12c32a45bcd441307e632fca6d9af7d60289d44"
guerler
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diff changeset
234 "available.\nYou should consider upgrading via the "
9e54283cc701 "planemo upload commit d12c32a45bcd441307e632fca6d9af7d60289d44"
guerler
parents:
diff changeset
235 "'%s install --upgrade pip' command.",
9e54283cc701 "planemo upload commit d12c32a45bcd441307e632fca6d9af7d60289d44"
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diff changeset
236 pip_version, pypi_version, pip_cmd
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guerler
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diff changeset
237 )
9e54283cc701 "planemo upload commit d12c32a45bcd441307e632fca6d9af7d60289d44"
guerler
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diff changeset
238 except Exception:
9e54283cc701 "planemo upload commit d12c32a45bcd441307e632fca6d9af7d60289d44"
guerler
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diff changeset
239 logger.debug(
9e54283cc701 "planemo upload commit d12c32a45bcd441307e632fca6d9af7d60289d44"
guerler
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diff changeset
240 "There was an error checking the latest version of pip",
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guerler
parents:
diff changeset
241 exc_info=True,
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guerler
parents:
diff changeset
242 )