Utiliser le lxml du système
[auf_savoirs_en_partage_django.git] / bootstrap.py
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1##############################################################################
2#
88f4d825 3# Copyright (c) 2006 Zope Foundation and Contributors.
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4# All Rights Reserved.
5#
6# This software is subject to the provisions of the Zope Public License,
7# Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution.
8# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
9# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
10# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
11# FOR A PARTICULAR PURPOSE.
12#
13##############################################################################
14"""Bootstrap a buildout-based project
15
16Simply run this script in a directory containing a buildout.cfg.
17The script accepts buildout command-line options, so you can
18use the -c option to specify an alternate configuration file.
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19"""
20
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21import os
22import shutil
23import sys
24import tempfile
25
26from optparse import OptionParser
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27
28tmpeggs = tempfile.mkdtemp()
29
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30usage = '''\
31[DESIRED PYTHON FOR BUILDOUT] bootstrap.py [options]
32
33Bootstraps a buildout-based project.
34
35Simply run this script in a directory containing a buildout.cfg, using the
36Python that you want bin/buildout to use.
37
38Note that by using --find-links to point to local resources, you can keep
39this script from going over the network.
40'''
41
42parser = OptionParser(usage=usage)
43parser.add_option("-v", "--version", help="use a specific zc.buildout version")
155a7c62 44
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45parser.add_option("-t", "--accept-buildout-test-releases",
46 dest='accept_buildout_test_releases',
47 action="store_true", default=False,
48 help=("Normally, if you do not specify a --version, the "
49 "bootstrap script and buildout gets the newest "
50 "*final* versions of zc.buildout and its recipes and "
51 "extensions for you. If you use this flag, "
52 "bootstrap and buildout will get the newest releases "
53 "even if they are alphas or betas."))
54parser.add_option("-c", "--config-file",
55 help=("Specify the path to the buildout configuration "
56 "file to be used."))
57parser.add_option("-f", "--find-links",
58 help=("Specify a URL to search for buildout releases"))
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59parser.add_option("--allow-site-packages",
60 action="store_true", default=False,
61 help=("Let bootstrap.py use existing site packages"))
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62
63
64options, args = parser.parse_args()
65
66######################################################################
67# load/install setuptools
68
155a7c62 69try:
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70 if options.allow_site_packages:
71 import setuptools
72 import pkg_resources
73 from urllib.request import urlopen
155a7c62 74except ImportError:
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75 from urllib2 import urlopen
76
77ez = {}
78exec(urlopen('https://bootstrap.pypa.io/ez_setup.py').read(), ez)
79
80if not options.allow_site_packages:
81 # ez_setup imports site, which adds site packages
82 # this will remove them from the path to ensure that incompatible versions
83 # of setuptools are not in the path
84 import site
85 # inside a virtualenv, there is no 'getsitepackages'.
86 # We can't remove these reliably
87 if hasattr(site, 'getsitepackages'):
88 for sitepackage_path in site.getsitepackages():
89 sys.path[:] = [x for x in sys.path if sitepackage_path not in x]
90
91setup_args = dict(to_dir=tmpeggs, download_delay=0)
92ez['use_setuptools'](**setup_args)
93import setuptools
94import pkg_resources
95
96# This does not (always?) update the default working set. We will
97# do it.
98for path in sys.path:
99 if path not in pkg_resources.working_set.entries:
100 pkg_resources.working_set.add_entry(path)
155a7c62 101
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102######################################################################
103# Install buildout
104
105ws = pkg_resources.working_set
106
107cmd = [sys.executable, '-c',
108 'from setuptools.command.easy_install import main; main()',
109 '-mZqNxd', tmpeggs]
110
111find_links = os.environ.get(
112 'bootstrap-testing-find-links',
113 options.find_links or
114 ('http://downloads.buildout.org/'
115 if options.accept_buildout_test_releases else None)
116 )
117if find_links:
118 cmd.extend(['-f', find_links])
119
120setuptools_path = ws.find(
121 pkg_resources.Requirement.parse('setuptools')).location
122
123requirement = 'zc.buildout'
124version = options.version
125if version is None and not options.accept_buildout_test_releases:
126 # Figure out the most recent final version of zc.buildout.
127 import setuptools.package_index
128 _final_parts = '*final-', '*final'
129
130 def _final_version(parsed_version):
131 for part in parsed_version:
132 if (part[:1] == '*') and (part not in _final_parts):
133 return False
134 return True
135 index = setuptools.package_index.PackageIndex(
136 search_path=[setuptools_path])
137 if find_links:
138 index.add_find_links((find_links,))
139 req = pkg_resources.Requirement.parse(requirement)
140 if index.obtain(req) is not None:
141 best = []
142 bestv = None
143 for dist in index[req.project_name]:
144 distv = dist.parsed_version
145 if _final_version(distv):
146 if bestv is None or distv > bestv:
147 best = [dist]
148 bestv = distv
149 elif distv == bestv:
150 best.append(dist)
151 if best:
152 best.sort()
153 version = best[-1].version
154if version:
155 requirement = '=='.join((requirement, version))
156cmd.append(requirement)
157
158import subprocess
159if subprocess.call(cmd, env=dict(os.environ, PYTHONPATH=setuptools_path)) != 0:
160 raise Exception(
50cd3cc9 161 "Failed to execute command:\n%s" % repr(cmd)[1:-1])
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162
163######################################################################
164# Import and run buildout
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165
166ws.add_entry(tmpeggs)
88f4d825 167ws.require(requirement)
155a7c62 168import zc.buildout.buildout
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169
170if not [a for a in args if '=' not in a]:
171 args.append('bootstrap')
172
173# if -c was provided, we push it back into args for buildout' main function
174if options.config_file is not None:
175 args[0:0] = ['-c', options.config_file]
176
177zc.buildout.buildout.main(args)
155a7c62 178shutil.rmtree(tmpeggs)