--- a/contrib/debugshell.py	Fri Sep 20 10:18:09 2013 -0400
+++ b/contrib/debugshell.py	Mon Sep 23 14:28:01 2013 -0700
@@ -20,6 +20,7 @@
 
     cl = repo.changelog
     mf = repo.manifest
+    cl, mf # use variables to appease pyflakes
 
     IPython.embed()