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Fresh http://downloads.buildout.org/1/bootstrap.py

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commit 97ad73755b8f4ecffb14f35d5f15437a75f0ae81 1 parent 557bed9
Maurits van Rees authored February 15, 2013

Showing 1 changed file with 219 additions and 69 deletions. Show diff stats Hide diff stats

  1. 288  bootstrap.py
288  bootstrap.py
... ...
@@ -1,6 +1,6 @@
1 1
 ##############################################################################
2 2
 #
3  
-# Copyright (c) 2006 Zope Corporation and Contributors.
  3
+# Copyright (c) 2006 Zope Foundation and Contributors.
4 4
 # All Rights Reserved.
5 5
 #
6 6
 # This software is subject to the provisions of the Zope Public License,
@@ -16,112 +16,262 @@
16 16
 Simply run this script in a directory containing a buildout.cfg.
17 17
 The script accepts buildout command-line options, so you can
18 18
 use the -c option to specify an alternate configuration file.
19  
-
20  
-$Id$
21 19
 """
22 20
 
23  
-import os, shutil, sys, tempfile, urllib2
  21
+import os, shutil, sys, tempfile, urllib, urllib2, subprocess
24 22
 from optparse import OptionParser
25 23
 
26  
-tmpeggs = tempfile.mkdtemp()
  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)
27 69
 
28 70
 is_jython = sys.platform.startswith('java')
29 71
 
  72
+setuptools_source = 'http://peak.telecommunity.com/dist/ez_setup.py'
  73
+distribute_source = 'http://python-distribute.org/distribute_setup.py'
  74
+
  75
+
30 76
 # parsing arguments
31  
-parser = OptionParser(
32  
-    'This is a custom version of the zc.buildout %prog script.  It is '
33  
-    'intended to meet a temporary need if you encounter problems with '
34  
-    'the zc.buildout 1.5 release.')
35  
-parser.add_option("-v", "--version", dest="version", default='1.4.4',
36  
-                          help='Use a specific zc.buildout version.  *This '
37  
-                          'bootstrap script defaults to '
38  
-                          '1.4.4, unlike usual buildpout bootstrap scripts.*')
39  
-parser.add_option("-d", "--distribute",
40  
-                   action="store_true", dest="distribute", default=False,
41  
-                   help="Use Disribute rather than Setuptools.")
  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.
42 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."))
43 133
 parser.add_option("-c", None, action="store", dest="config_file",
44 134
                    help=("Specify the path to the buildout configuration "
45 135
                          "file to be used."))
46 136
 
47 137
 options, args = parser.parse_args()
48 138
 
49  
-# if -c was provided, we push it back into args for buildout' main function
50  
-if options.config_file is not None:
51  
-    args += ['-c', options.config_file]
52  
-
53  
-if options.version is not None:
54  
-    VERSION = '==%s' % options.version
  139
+if options.eggs:
  140
+    eggs_dir = os.path.abspath(os.path.expanduser(options.eggs))
55 141
 else:
56  
-    VERSION = ''
  142
+    eggs_dir = tempfile.mkdtemp()
57 143
 
58  
-USE_DISTRIBUTE = options.distribute
59  
-args = args + ['bootstrap']
  144
+if options.setup_source is None:
  145
+    if options.use_distribute:
  146
+        options.setup_source = distribute_source
  147
+    else:
  148
+        options.setup_source = setuptools_source
  149
+
  150
+if options.accept_buildout_test_releases:
  151
+    args.insert(0, 'buildout:accept-buildout-test-releases=true')
60 152
 
61  
-to_reload = False
62 153
 try:
63 154
     import pkg_resources
  155
+    import setuptools  # A flag.  Sometimes pkg_resources is installed alone.
64 156
     if not hasattr(pkg_resources, '_distribute'):
65  
-        to_reload = True
66 157
         raise ImportError
67 158
 except ImportError:
  159
+    ez_code = urllib2.urlopen(
  160
+        options.setup_source).read().replace('\r\n', '\n')
68 161
     ez = {}
69  
-    if USE_DISTRIBUTE:
70  
-        exec urllib2.urlopen('http://python-distribute.org/distribute_setup.py'
71  
-                         ).read() in ez
72  
-        ez['use_setuptools'](to_dir=tmpeggs, download_delay=0, no_fake=True)
73  
-    else:
74  
-        exec urllib2.urlopen('http://peak.telecommunity.com/dist/ez_setup.py'
75  
-                             ).read() in ez
76  
-        ez['use_setuptools'](to_dir=tmpeggs, download_delay=0)
  162
+    exec ez_code in ez
  163
+    setup_args = dict(to_dir=eggs_dir, download_delay=0)
  164
+    if options.download_base:
  165
+        setup_args['download_base'] = options.download_base
  166
+    if options.use_distribute:
  167
+        setup_args['no_fake'] = True
  168
+        if sys.version_info[:2] == (2, 4):
  169
+            setup_args['version'] = '0.6.32'
  170
+    ez['use_setuptools'](**setup_args)
  171
+    if 'pkg_resources' in sys.modules:
  172
+        reload(sys.modules['pkg_resources'])
  173
+    import pkg_resources
  174
+    # This does not (always?) update the default working set.  We will
  175
+    # do it.
  176
+    for path in sys.path:
  177
+        if path not in pkg_resources.working_set.entries:
  178
+            pkg_resources.working_set.add_entry(path)
77 179
 
78  
-    if to_reload:
79  
-        reload(pkg_resources)
80  
-    else:
81  
-        import pkg_resources
  180
+cmd = [quote(sys.executable),
  181
+       '-c',
  182
+       quote('from setuptools.command.easy_install import main; main()'),
  183
+       '-mqNxd',
  184
+       quote(eggs_dir)]
82 185
 
83  
-if sys.platform == 'win32':
84  
-    def quote(c):
85  
-        if ' ' in c:
86  
-            return '"%s"' % c # work around spawn lamosity on windows
87  
-        else:
88  
-            return c
89  
-else:
90  
-    def quote (c):
91  
-        return c
  186
+if not has_broken_dash_S:
  187
+    cmd.insert(1, '-S')
92 188
 
93  
-ws  = pkg_resources.working_set
  189
+find_links = options.download_base
  190
+if not find_links:
  191
+    find_links = os.environ.get('bootstrap-testing-find-links')
  192
+if not find_links and options.accept_buildout_test_releases:
  193
+    find_links = 'http://downloads.buildout.org/'
  194
+if find_links:
  195
+    cmd.extend(['-f', quote(find_links)])
94 196
 
95  
-if USE_DISTRIBUTE:
96  
-    requirement = 'distribute'
  197
+if options.use_distribute:
  198
+    setup_requirement = 'distribute'
97 199
 else:
98  
-    requirement = 'setuptools'
  200
+    setup_requirement = 'setuptools'
  201
+ws = pkg_resources.working_set
  202
+setup_requirement_path = ws.find(
  203
+    pkg_resources.Requirement.parse(setup_requirement)).location
  204
+env = dict(
  205
+    os.environ,
  206
+    PYTHONPATH=setup_requirement_path)
99 207
 
100  
-env = dict(os.environ,
101  
-           PYTHONPATH=
102  
-           ws.find(pkg_resources.Requirement.parse(requirement)).location
103  
-           )
  208
+requirement = 'zc.buildout'
  209
+version = options.version
  210
+if version is None and not options.accept_buildout_test_releases:
  211
+    # Figure out the most recent final version of zc.buildout.
  212
+    import setuptools.package_index
  213
+    _final_parts = '*final-', '*final'
104 214
 
105  
-cmd = [quote(sys.executable),
106  
-       '-c',
107  
-       quote('from setuptools.command.easy_install import main; main()'),
108  
-       '-mqNxd',
109  
-       quote(tmpeggs)]
  215
+    def _final_version(parsed_version):
  216
+        for part in parsed_version:
  217
+            if (part[:1] == '*') and (part not in _final_parts):
  218
+                return False
  219
+        return True
  220
+    index = setuptools.package_index.PackageIndex(
  221
+        search_path=[setup_requirement_path])
  222
+    if find_links:
  223
+        index.add_find_links((find_links,))
  224
+    req = pkg_resources.Requirement.parse(requirement)
  225
+    if index.obtain(req) is not None:
  226
+        best = []
  227
+        bestv = None
  228
+        for dist in index[req.project_name]:
  229
+            distv = dist.parsed_version
  230
+            if distv >= pkg_resources.parse_version('2dev'):
  231
+                continue
  232
+            if _final_version(distv):
  233
+                if bestv is None or distv > bestv:
  234
+                    best = [dist]
  235
+                    bestv = distv
  236
+                elif distv == bestv:
  237
+                    best.append(dist)
  238
+        if best:
  239
+            best.sort()
  240
+            version = best[-1].version
110 241
 
111  
-if 'bootstrap-testing-find-links' in os.environ:
112  
-    cmd.extend(['-f', os.environ['bootstrap-testing-find-links']])
  242
+if version:
  243
+    requirement += '=='+version
  244
+else:
  245
+    requirement += '<2dev'
113 246
 
114  
-cmd.append('zc.buildout' + VERSION)
  247
+cmd.append(requirement)
115 248
 
116 249
 if is_jython:
117 250
     import subprocess
118 251
     exitcode = subprocess.Popen(cmd, env=env).wait()
119  
-else: # Windows prefers this, apparently; otherwise we would prefer subprocess
  252
+else:  # Windows prefers this, apparently; otherwise we would prefer subprocess
120 253
     exitcode = os.spawnle(*([os.P_WAIT, sys.executable] + cmd + [env]))
121  
-assert exitcode == 0
  254
+if exitcode != 0:
  255
+    sys.stdout.flush()
  256
+    sys.stderr.flush()
  257
+    print ("An error occurred when trying to install zc.buildout. "
  258
+           "Look above this message for any errors that "
  259
+           "were output by easy_install.")
  260
+    sys.exit(exitcode)
122 261
 
123  
-ws.add_entry(tmpeggs)
124  
-ws.require('zc.buildout' + VERSION)
  262
+ws.add_entry(eggs_dir)
  263
+ws.require(requirement)
125 264
 import zc.buildout.buildout
  265
+
  266
+# If there isn't already a command in the args, add bootstrap
  267
+if not [a for a in args if '=' not in a]:
  268
+    args.append('bootstrap')
  269
+
  270
+
  271
+# if -c was provided, we push it back into args for buildout's main function
  272
+if options.config_file is not None:
  273
+    args[0:0] = ['-c', options.config_file]
  274
+
126 275
 zc.buildout.buildout.main(args)
127  
-shutil.rmtree(tmpeggs)
  276
+if not options.eggs:  # clean up temporary egg directory
  277
+    shutil.rmtree(eggs_dir)

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