Added latest bootstrap.py

bootstrap.py

@@ -56,6 +56,11 @@ parser.add_option("-c", "--config-file",
                         "file to be used."))
 parser.add_option("-f", "--find-links",
                   help=("Specify a URL to search for buildout releases"))
+parser.add_option("--allow-site-packages",
+                  action="store_true", default=False,
+                  help=("Let bootstrap.py use existing site packages"))
+parser.add_option("--setuptools-version",
+                  help="use a specific setuptools version")
 
 
 options, args = parser.parse_args()
@@ -63,45 +68,42 @@ options, args = parser.parse_args()
 ######################################################################
 # load/install setuptools
 
-to_reload = False
 try:
-    import pkg_resources
-    import setuptools
+    if options.allow_site_packages:
+        import setuptools
+        import pkg_resources
+    from urllib.request import urlopen
 except ImportError:
-    ez = {}
-
-    try:
-        from urllib.request import urlopen
-    except ImportError:
-        from urllib2 import urlopen
-
-    # XXX use a more permanent ez_setup.py URL when available.
-    exec(urlopen('https://bitbucket.org/pypa/setuptools/raw/0.7.2/ez_setup.py'
-                ).read(), ez)
-    setup_args = dict(to_dir=tmpeggs, download_delay=0)
-    ez['use_setuptools'](**setup_args)
-
-    if to_reload:
-        reload(pkg_resources)
-    import pkg_resources
-    # This does not (always?) update the default working set.  We will
-    # do it.
-    for path in sys.path:
-        if path not in pkg_resources.working_set.entries:
-            pkg_resources.working_set.add_entry(path)
+    from urllib2 import urlopen
 
-######################################################################
-# Try to best guess the version of buildout given setuptools
-if options.version is None:
-
-  try:
-    from distutils.version import LooseVersion
-    package = pkg_resources.require('setuptools')[0]
-    v = LooseVersion(package.version)
-    if v < LooseVersion('0.7'):
-      options.version = '2.1.1'
-  except:
-    pass
+ez = {}
+exec(urlopen('https://bootstrap.pypa.io/ez_setup.py').read(), ez)
+
+if not options.allow_site_packages:
+    # ez_setup imports site, which adds site packages
+    # this will remove them from the path to ensure that incompatible versions
+    # of setuptools are not in the path
+    import site
+    # inside a virtualenv, there is no 'getsitepackages'.
+    # We can't remove these reliably
+    if hasattr(site, 'getsitepackages'):
+        for sitepackage_path in site.getsitepackages():
+            sys.path[:] = [x for x in sys.path if sitepackage_path not in x]
+
+setup_args = dict(to_dir=tmpeggs, download_delay=0)
+
+if options.setuptools_version is not None:
+    setup_args['version'] = options.setuptools_version
+
+ez['use_setuptools'](**setup_args)
+import setuptools
+import pkg_resources
+
+# This does not (always?) update the default working set.  We will
+# do it.
+for path in sys.path:
+    if path not in pkg_resources.working_set.entries:
+        pkg_resources.working_set.add_entry(path)
 
 ######################################################################
 # Install buildout
@@ -132,10 +134,15 @@ if version is None and not options.accept_buildout_test_releases:
     _final_parts = '*final-', '*final'
 
     def _final_version(parsed_version):
-        for part in parsed_version:
-            if (part[:1] == '*') and (part not in _final_parts):
-                return False
-        return True
+        try:
+            return not parsed_version.is_prerelease
+        except AttributeError:
+            # Older setuptools
+            for part in parsed_version:
+                if (part[:1] == '*') and (part not in _final_parts):
+                    return False
+            return True
+
     index = setuptools.package_index.PackageIndex(
         search_path=[setuptools_path])
     if find_links:
@@ -162,8 +169,7 @@ cmd.append(requirement)
 import subprocess
 if subprocess.call(cmd, env=dict(os.environ, PYTHONPATH=setuptools_path)) != 0:
     raise Exception(
-        "Failed to execute command:\n%s",
-        repr(cmd)[1:-1])
+        "Failed to execute command:\n%s" % repr(cmd)[1:-1])
 
 ######################################################################
 # Import and run buildout