Keystone cannot be started outside the tree

This is after installing Keystone with "sudo python setup.py install"

  klmitch@devhost-klmitch:~/devel/src/keystone$ keystone-all --config-file=/home/klmitch/keystone/keystone-all.conf
  Traceback (most recent call last):
    File "/usr/local/bin/keystone-all", line 5, in <module>
      pkg_resources.run_script('keystone==2012.1', 'keystone-all')
    File "/usr/lib/python2.6/dist-packages/pkg_resources.py", line 467, in run_script
      self.require(requires)[0].run_script(script_name, ns)
    File "/usr/lib/python2.6/dist-packages/pkg_resources.py", line 1200, in run_script
      execfile(script_filename, namespace, namespace)
    File "/usr/local/lib/python2.6/dist-packages/keystone-2012.1-py2.6.egg/EGG-INFO/scripts/keystone-all", line 68, in <module>
      int(options['admin_port'])))
    File "/usr/local/lib/python2.6/dist-packages/keystone-2012.1-py2.6.egg/EGG-INFO/scripts/keystone-all", line 29, in create_server
      app = deploy.loadapp('config:%s' % conf, name=name)
    File "/usr/local/lib/python2.6/dist-packages/paste/deploy/loadwsgi.py", line 247, in loadapp
      return loadobj(APP, uri, name=name, **kw)
    File "/usr/local/lib/python2.6/dist-packages/paste/deploy/loadwsgi.py", line 271, in loadobj
      global_conf=global_conf)
    File "/usr/local/lib/python2.6/dist-packages/paste/deploy/loadwsgi.py", line 296, in loadcontext
      global_conf=global_conf)
    File "/usr/local/lib/python2.6/dist-packages/paste/deploy/loadwsgi.py", line 320, in _loadconfig
      return loader.get_context(object_type, name, global_conf)
    File "/usr/local/lib/python2.6/dist-packages/paste/deploy/loadwsgi.py", line 450, in get_context
      global_additions=global_additions)
    File "/usr/local/lib/python2.6/dist-packages/paste/deploy/loadwsgi.py", line 559, in _pipeline_app_context
      APP, pipeline[-1], global_conf)
    File "/usr/local/lib/python2.6/dist-packages/paste/deploy/loadwsgi.py", line 458, in get_context
      section)
    File "/usr/local/lib/python2.6/dist-packages/paste/deploy/loadwsgi.py", line 517, in _context_from_explicit
      value = import_string(found_expr)
    File "/usr/local/lib/python2.6/dist-packages/paste/deploy/loadwsgi.py", line 22, in import_string
      return pkg_resources.EntryPoint.parse("x=" + s).load(False)
    File "/usr/lib/python2.6/dist-packages/pkg_resources.py", line 1954, in load
      entry = __import__(self.module_name, globals(),globals(), ['__name__'])
    File "/usr/local/lib/python2.6/dist-packages/keystone-2012.1-py2.6.egg/keystone/server.py", line 59, in <module>
      from keystone.common import config as common_config
    File "/usr/local/lib/python2.6/dist-packages/keystone-2012.1-py2.6.egg/keystone/common/config.py", line 23, in <module>
      import logging.config
  ImportError: No module named config

Note that:

  klmitch@devhost-klmitch:~/devel/src/keystone$ python
  Python 2.6.6 (r266:84292, Dec 26 2010, 22:31:48)
  [GCC 4.4.5] on linux2
  Type "help", "copyright", "credits" or "license" for more information.
  >>> import logging.config
  >>>

When run within the tree, i.e., as "./bin/keystone-all", it works fine.