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6a0db3a @gawel initial commit
gawel authored
1 ##############################################################################
2 #
3 # Copyright (c) 2006 Zope Foundation and Contributors.
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
16 Simply run this script in a directory containing a buildout.cfg.
17 The script accepts buildout command-line options, so you can
18 use the -c option to specify an alternate configuration file.
19 """
20
21 import os, shutil, sys, tempfile, urllib, urllib2, subprocess
22 from optparse import OptionParser
23
24 if sys.platform == 'win32':
25 def quote(c):
26 if ' ' in c:
27 return '"%s"' % c # work around spawn lamosity on windows
28 else:
29 return c
30 else:
31 quote = str
32
33 # See zc.buildout.easy_install._has_broken_dash_S for motivation and comments.
34 stdout, stderr = subprocess.Popen(
35 [sys.executable, '-Sc',
36 'try:\n'
37 ' import ConfigParser\n'
38 'except ImportError:\n'
39 ' print 1\n'
40 'else:\n'
41 ' print 0\n'],
42 stdout=subprocess.PIPE, stderr=subprocess.PIPE).communicate()
43 has_broken_dash_S = bool(int(stdout.strip()))
44
45 # In order to be more robust in the face of system Pythons, we want to
46 # run without site-packages loaded. This is somewhat tricky, in
47 # particular because Python 2.6's distutils imports site, so starting
48 # with the -S flag is not sufficient. However, we'll start with that:
49 if not has_broken_dash_S and 'site' in sys.modules:
50 # We will restart with python -S.
51 args = sys.argv[:]
52 args[0:0] = [sys.executable, '-S']
53 args = map(quote, args)
54 os.execv(sys.executable, args)
55 # Now we are running with -S. We'll get the clean sys.path, import site
56 # because distutils will do it later, and then reset the path and clean
57 # out any namespace packages from site-packages that might have been
58 # loaded by .pth files.
59 clean_path = sys.path[:]
60 import site # imported because of its side effects
61 sys.path[:] = clean_path
62 for k, v in sys.modules.items():
63 if k in ('setuptools', 'pkg_resources') or (
64 hasattr(v, '__path__') and
65 len(v.__path__) == 1 and
66 not os.path.exists(os.path.join(v.__path__[0], '__init__.py'))):
67 # This is a namespace package. Remove it.
68 sys.modules.pop(k)
69
70 is_jython = sys.platform.startswith('java')
71
72 setuptools_source = 'http://peak.telecommunity.com/dist/ez_setup.py'
73 distribute_source = 'http://python-distribute.org/distribute_setup.py'
74
75
76 # parsing arguments
77 def normalize_to_url(option, opt_str, value, parser):
78 if value:
79 if '://' not in value: # It doesn't smell like a URL.
80 value = 'file://%s' % (
81 urllib.pathname2url(
82 os.path.abspath(os.path.expanduser(value))),)
83 if opt_str == '--download-base' and not value.endswith('/'):
84 # Download base needs a trailing slash to make the world happy.
85 value += '/'
86 else:
87 value = None
88 name = opt_str[2:].replace('-', '_')
89 setattr(parser.values, name, value)
90
91 usage = '''\
92 [DESIRED PYTHON FOR BUILDOUT] bootstrap.py [options]
93
94 Bootstraps a buildout-based project.
95
96 Simply run this script in a directory containing a buildout.cfg, using the
97 Python that you want bin/buildout to use.
98
99 Note that by using --setup-source and --download-base to point to
100 local resources, you can keep this script from going over the network.
101 '''
102
103 parser = OptionParser(usage=usage)
104 parser.add_option("-v", "--version", dest="version",
105 help="use a specific zc.buildout version")
106 parser.add_option("-d", "--distribute",
107 action="store_true", dest="use_distribute", default=False,
108 help="Use Distribute rather than Setuptools.")
109 parser.add_option("--setup-source", action="callback", dest="setup_source",
110 callback=normalize_to_url, nargs=1, type="string",
111 help=("Specify a URL or file location for the setup file. "
112 "If you use Setuptools, this will default to " +
113 setuptools_source + "; if you use Distribute, this "
114 "will default to " + distribute_source + "."))
115 parser.add_option("--download-base", action="callback", dest="download_base",
116 callback=normalize_to_url, nargs=1, type="string",
117 help=("Specify a URL or directory for downloading "
118 "zc.buildout and either Setuptools or Distribute. "
119 "Defaults to PyPI."))
120 parser.add_option("--eggs",
121 help=("Specify a directory for storing eggs. Defaults to "
122 "a temporary directory that is deleted when the "
123 "bootstrap script completes."))
124 parser.add_option("-t", "--accept-buildout-test-releases",
125 dest='accept_buildout_test_releases',
126 action="store_true", default=False,
127 help=("Normally, if you do not specify a --version, the "
128 "bootstrap script and buildout gets the newest "
129 "*final* versions of zc.buildout and its recipes and "
130 "extensions for you. If you use this flag, "
131 "bootstrap and buildout will get the newest releases "
132 "even if they are alphas or betas."))
133 parser.add_option("-c", None, action="store", dest="config_file",
134 help=("Specify the path to the buildout configuration "
135 "file to be used."))
136
137 options, args = parser.parse_args()
138
139 # if -c was provided, we push it back into args for buildout's main function
140 if options.config_file is not None:
141 args += ['-c', options.config_file]
142
143 if options.eggs:
144 eggs_dir = os.path.abspath(os.path.expanduser(options.eggs))
145 else:
146 eggs_dir = tempfile.mkdtemp()
147
148 if options.setup_source is None:
149 if options.use_distribute:
150 options.setup_source = distribute_source
151 else:
152 options.setup_source = setuptools_source
153
154 if options.accept_buildout_test_releases:
155 args.append('buildout:accept-buildout-test-releases=true')
156 args.append('bootstrap')
157
158 try:
159 import pkg_resources
160 import setuptools # A flag. Sometimes pkg_resources is installed alone.
161 if not hasattr(pkg_resources, '_distribute'):
162 raise ImportError
163 except ImportError:
164 ez_code = urllib2.urlopen(
165 options.setup_source).read().replace('\r\n', '\n')
166 ez = {}
167 exec ez_code in ez
168 setup_args = dict(to_dir=eggs_dir, download_delay=0)
169 if options.download_base:
170 setup_args['download_base'] = options.download_base
171 if options.use_distribute:
172 setup_args['no_fake'] = True
173 ez['use_setuptools'](**setup_args)
174 if 'pkg_resources' in sys.modules:
175 reload(sys.modules['pkg_resources'])
176 import pkg_resources
177 # This does not (always?) update the default working set. We will
178 # do it.
179 for path in sys.path:
180 if path not in pkg_resources.working_set.entries:
181 pkg_resources.working_set.add_entry(path)
182
183 cmd = [quote(sys.executable),
184 '-c',
185 quote('from setuptools.command.easy_install import main; main()'),
186 '-mqNxd',
187 quote(eggs_dir)]
188
189 if not has_broken_dash_S:
190 cmd.insert(1, '-S')
191
192 find_links = options.download_base
193 if not find_links:
194 find_links = os.environ.get('bootstrap-testing-find-links')
195 if find_links:
196 cmd.extend(['-f', quote(find_links)])
197
198 if options.use_distribute:
199 setup_requirement = 'distribute'
200 else:
201 setup_requirement = 'setuptools'
202 ws = pkg_resources.working_set
203 setup_requirement_path = ws.find(
204 pkg_resources.Requirement.parse(setup_requirement)).location
205 env = dict(
206 os.environ,
207 PYTHONPATH=setup_requirement_path)
208
209 requirement = 'zc.buildout'
210 version = options.version
211 if version is None and not options.accept_buildout_test_releases:
212 # Figure out the most recent final version of zc.buildout.
213 import setuptools.package_index
214 _final_parts = '*final-', '*final'
215
216 def _final_version(parsed_version):
217 for part in parsed_version:
218 if (part[:1] == '*') and (part not in _final_parts):
219 return False
220 return True
221 index = setuptools.package_index.PackageIndex(
222 search_path=[setup_requirement_path])
223 if find_links:
224 index.add_find_links((find_links,))
225 req = pkg_resources.Requirement.parse(requirement)
226 if index.obtain(req) is not None:
227 best = []
228 bestv = None
229 for dist in index[req.project_name]:
230 distv = dist.parsed_version
231 if _final_version(distv):
232 if bestv is None or distv > bestv:
233 best = [dist]
234 bestv = distv
235 elif distv == bestv:
236 best.append(dist)
237 if best:
238 best.sort()
239 version = best[-1].version
240 if version:
241 requirement = '=='.join((requirement, version))
242 cmd.append(requirement)
243
244 if is_jython:
245 import subprocess
246 exitcode = subprocess.Popen(cmd, env=env).wait()
247 else: # Windows prefers this, apparently; otherwise we would prefer subprocess
248 exitcode = os.spawnle(*([os.P_WAIT, sys.executable] + cmd + [env]))
249 if exitcode != 0:
250 sys.stdout.flush()
251 sys.stderr.flush()
252 print ("An error occurred when trying to install zc.buildout. "
253 "Look above this message for any errors that "
254 "were output by easy_install.")
255 sys.exit(exitcode)
256
257 ws.add_entry(eggs_dir)
258 ws.require(requirement)
259 import zc.buildout.buildout
260 zc.buildout.buildout.main(args)
261 if not options.eggs: # clean up temporary egg directory
262 shutil.rmtree(eggs_dir)
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