--- epsilon/setuphelper.py.orig	2009-02-11 08:15:39.000000000 +0100
+++ epsilon/setuphelper.py	2009-02-11 08:18:56.000000000 +0100
@@ -21,6 +21,9 @@
 def _regeneratePluginCache(pluginPackages):
     print 'Regenerating cache with path: ',
     pprint.pprint(sys.path)
+    if os.getenv("PORTAGE_PLUGINCACHE_NOOP") != None:
+        print 'Not regenerating plugin cache for portage sandbox usage.'
+        return
     from twisted import plugin
     for pluginModule in pluginModules([
         p + ".plugins" for p in pluginPackages]):