 <Location />
  PythonOption PYTHON_EGG_CACHE /tmp
  SetHandler mod_python
  PythonPath "['/usr/local/topp/trac']   sys.path"
  PythonInterpreter main_interpreter
  PythonHandler myvirtualtrac

  PythonOption TracEnvParentDir /usr/local/topp/trac/projects
  PythonOption TracUriRoot /
  PythonDebug On
 </Location>