--- a/mercurial/repair.py	Mon Apr 16 17:03:39 2012 +0200
+++ b/mercurial/repair.py	Mon Apr 16 10:33:18 2012 +0200
@@ -10,6 +10,7 @@
 from mercurial.node import short
 from mercurial.i18n import _
 import os
+import errno
 
 def _bundle(repo, bases, heads, node, suffix, compress=True):
     """create a bundle with the specified revisions as a backup"""