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1 ############################################################################## |
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2 # |
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3 # Copyright (c) 2006 Zope Foundation and Contributors. |
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4 # All Rights Reserved. |
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5 # |
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6 # This software is subject to the provisions of the Zope Public License, |
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7 # Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution. |
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8 # THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED |
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9 # WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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10 # WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS |
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11 # FOR A PARTICULAR PURPOSE. |
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12 # |
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13 ############################################################################## |
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14 """Bootstrap a buildout-based project |
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15 |
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16 Simply run this script in a directory containing a buildout.cfg. |
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17 The script accepts buildout command-line options, so you can |
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18 use the -c option to specify an alternate configuration file. |
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19 """ |
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20 |
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21 import os |
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22 import shutil |
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23 import sys |
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24 import tempfile |
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25 |
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26 from optparse import OptionParser |
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27 |
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28 __version__ = '2015-07-01' |
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29 # See zc.buildout's changelog if this version is up to date. |
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30 |
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31 tmpeggs = tempfile.mkdtemp(prefix='bootstrap-') |
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32 |
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33 usage = '''\ |
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34 [DESIRED PYTHON FOR BUILDOUT] bootstrap.py [options] |
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35 |
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36 Bootstraps a buildout-based project. |
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37 |
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38 Simply run this script in a directory containing a buildout.cfg, using the |
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39 Python that you want bin/buildout to use. |
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40 |
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41 Note that by using --find-links to point to local resources, you can keep |
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42 this script from going over the network. |
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43 ''' |
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44 |
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45 parser = OptionParser(usage=usage) |
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46 parser.add_option("--version", |
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47 action="store_true", default=False, |
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48 help=("Return bootstrap.py version.")) |
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49 parser.add_option("-t", "--accept-buildout-test-releases", |
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50 dest='accept_buildout_test_releases', |
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51 action="store_true", default=False, |
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52 help=("Normally, if you do not specify a --buildout-version, " |
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53 "the bootstrap script and buildout gets the newest " |
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54 "*final* versions of zc.buildout and its recipes and " |
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55 "extensions for you. If you use this flag, " |
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56 "bootstrap and buildout will get the newest releases " |
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57 "even if they are alphas or betas.")) |
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58 parser.add_option("-c", "--config-file", |
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59 help=("Specify the path to the buildout configuration " |
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60 "file to be used.")) |
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61 parser.add_option("-f", "--find-links", |
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62 help=("Specify a URL to search for buildout releases")) |
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63 parser.add_option("--allow-site-packages", |
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64 action="store_true", default=False, |
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65 help=("Let bootstrap.py use existing site packages")) |
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66 parser.add_option("--buildout-version", |
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67 help="Use a specific zc.buildout version") |
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68 parser.add_option("--setuptools-version", |
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69 help="Use a specific setuptools version") |
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70 parser.add_option("--setuptools-to-dir", |
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71 help=("Allow for re-use of existing directory of " |
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72 "setuptools versions")) |
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73 |
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74 options, args = parser.parse_args() |
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75 if options.version: |
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76 print("bootstrap.py version %s" % __version__) |
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77 sys.exit(0) |
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78 |
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79 |
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80 ###################################################################### |
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81 # load/install setuptools |
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82 |
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83 try: |
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84 from urllib.request import urlopen |
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85 except ImportError: |
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86 from urllib2 import urlopen |
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87 |
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88 ez = {} |
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89 if os.path.exists('ez_setup.py'): |
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90 exec(open('ez_setup.py').read(), ez) |
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91 else: |
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92 exec(urlopen('https://bootstrap.pypa.io/ez_setup.py').read(), ez) |
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93 |
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94 if not options.allow_site_packages: |
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95 # ez_setup imports site, which adds site packages |
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96 # this will remove them from the path to ensure that incompatible versions |
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97 # of setuptools are not in the path |
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98 import site |
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99 # inside a virtualenv, there is no 'getsitepackages'. |
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100 # We can't remove these reliably |
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101 if hasattr(site, 'getsitepackages'): |
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102 for sitepackage_path in site.getsitepackages(): |
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103 # Strip all site-packages directories from sys.path that |
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104 # are not sys.prefix; this is because on Windows |
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105 # sys.prefix is a site-package directory. |
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106 if sitepackage_path != sys.prefix: |
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107 sys.path[:] = [x for x in sys.path |
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108 if sitepackage_path not in x] |
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109 |
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110 setup_args = dict(to_dir=tmpeggs, download_delay=0) |
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111 |
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112 if options.setuptools_version is not None: |
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113 setup_args['version'] = options.setuptools_version |
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114 if options.setuptools_to_dir is not None: |
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115 setup_args['to_dir'] = options.setuptools_to_dir |
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116 |
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117 ez['use_setuptools'](**setup_args) |
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118 import setuptools |
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119 import pkg_resources |
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120 |
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121 # This does not (always?) update the default working set. We will |
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122 # do it. |
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123 for path in sys.path: |
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124 if path not in pkg_resources.working_set.entries: |
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125 pkg_resources.working_set.add_entry(path) |
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126 |
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127 ###################################################################### |
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128 # Install buildout |
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129 |
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130 ws = pkg_resources.working_set |
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131 |
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132 setuptools_path = ws.find( |
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133 pkg_resources.Requirement.parse('setuptools')).location |
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134 |
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135 # Fix sys.path here as easy_install.pth added before PYTHONPATH |
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136 cmd = [sys.executable, '-c', |
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137 'import sys; sys.path[0:0] = [%r]; ' % setuptools_path + |
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138 'from setuptools.command.easy_install import main; main()', |
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139 '-mZqNxd', tmpeggs] |
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140 |
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141 find_links = os.environ.get( |
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142 'bootstrap-testing-find-links', |
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143 options.find_links or |
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144 ('http://downloads.buildout.org/' |
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145 if options.accept_buildout_test_releases else None) |
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146 ) |
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147 if find_links: |
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148 cmd.extend(['-f', find_links]) |
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149 |
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150 requirement = 'zc.buildout' |
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151 version = options.buildout_version |
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152 if version is None and not options.accept_buildout_test_releases: |
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153 # Figure out the most recent final version of zc.buildout. |
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154 import setuptools.package_index |
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155 _final_parts = '*final-', '*final' |
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156 |
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157 def _final_version(parsed_version): |
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158 try: |
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159 return not parsed_version.is_prerelease |
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160 except AttributeError: |
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161 # Older setuptools |
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162 for part in parsed_version: |
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163 if (part[:1] == '*') and (part not in _final_parts): |
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164 return False |
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165 return True |
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166 |
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167 index = setuptools.package_index.PackageIndex( |
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168 search_path=[setuptools_path]) |
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169 if find_links: |
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170 index.add_find_links((find_links,)) |
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171 req = pkg_resources.Requirement.parse(requirement) |
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172 if index.obtain(req) is not None: |
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173 best = [] |
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174 bestv = None |
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175 for dist in index[req.project_name]: |
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176 distv = dist.parsed_version |
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177 if _final_version(distv): |
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178 if bestv is None or distv > bestv: |
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179 best = [dist] |
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180 bestv = distv |
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181 elif distv == bestv: |
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182 best.append(dist) |
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183 if best: |
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184 best.sort() |
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185 version = best[-1].version |
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186 if version: |
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187 requirement = '=='.join((requirement, version)) |
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188 cmd.append(requirement) |
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189 |
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190 import subprocess |
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191 if subprocess.call(cmd) != 0: |
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192 raise Exception( |
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193 "Failed to execute command:\n%s" % repr(cmd)[1:-1]) |
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194 |
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195 ###################################################################### |
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196 # Import and run buildout |
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197 |
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198 ws.add_entry(tmpeggs) |
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199 ws.require(requirement) |
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200 import zc.buildout.buildout |
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201 |
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202 if not [a for a in args if '=' not in a]: |
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203 args.append('bootstrap') |
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204 |
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205 # if -c was provided, we push it back into args for buildout' main function |
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206 if options.config_file is not None: |
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207 args[0:0] = ['-c', options.config_file] |
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208 |
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209 zc.buildout.buildout.main(args) |
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210 shutil.rmtree(tmpeggs) |