--- trac.fcgi	2009-11-28 10:50:29.000000000 +0100
+++ trac.fcgi	2009-11-28 14:37:17.000000000 +0100
@@ -15,6 +15,11 @@
 #
 # Author: Jonas Borgström <jonas@edgewall.com>
 
+import os
+
+os.environ['TRAC_ENV_PARENT_DIR'] = '/var/trac'
+os.environ['PYTHON_EGG_CACHE'] = '/var/tmp/egg-cache'
+
 try:
     from trac.web import fcgi_frontend
     fcgi_frontend.run()