Uranium now runs in a separate sandbox

scripts/uranium

@@ -95,8 +95,10 @@ def _install_uranium(virtualenv_dir, uranium_dir=None, version=None):
         uranium_name = 'uranium=={0}'.format(version)
 
     with open(log_file, 'w+') as fh:
+        #status = subprocess.call([pip_executable, 'install', uranium_name,
+        #                        '--upgrade'], stdout=fh, stderr=fh)
         status = subprocess.call([pip_executable, 'install', uranium_name,
-                                 '--upgrade'], stdout=fh, stderr=fh)
+                                 '--upgrade'])
         if status:
             LOGGER.error("Unable to install uranium. please look at {0} for more info".format(
                 log_file

setup.py

@@ -23,7 +23,7 @@
 ]
 
 setup(name='uranium',
-      version='0.0.32',
+      version='0.0.36',
       description='a build system for python',
       long_description='a build system for python',
       author='Yusuke Tsutsumi',

uranium/__init__.py

@@ -55,9 +55,22 @@ def in_virtualenv(path):
     # we end my making the virtualenv environment relocatable
     make_environment_relocatable(path)
 
+URANIUM_LIBS = [
+    'docopt',
+    'jinja2',
+    'pip',
+    'pyyaml',
+    'requests',
+    'setuptools',
+    'six',
+    'virtualenv',
+    'zc.buildout'
+]
 
 def _activate_virtualenv(uranium_dir):
     """ this will activate a virtualenv in the case one exists """
+    sys.prefix = os.path.join(*sys.prefix.split(os.sep)[:-2])
+    old_prefix = sys.prefix
     sys.path = [p for p in sys.path if sys.prefix not in p]
 
     # mayybe this is necessary
@@ -79,6 +92,12 @@ def _activate_virtualenv(uranium_dir):
     # we modify the executable directly, because pip invokes this to install packages.
     sys.executable = os.path.join(uranium_dir, 'bin', 'python')
 
+    for name, req in pkg_resources.working_set.by_key.items():
+        if old_prefix in req.location:
+            del pkg_resources.working_set.by_key[name]
+
+    pkg_resources.working_set.entries = sys.path
+
 
 def _create_stdout_logger():
     """ create a logger to stdout """