diff -r de6ae8f016af -r a8bd7280330f mercurial/demandimport.py
--- a/mercurial/demandimport.py	Sun Dec 17 18:34:42 2006 -0800
+++ b/mercurial/demandimport.py	Sun Dec 17 18:45:46 2006 -0800
@@ -103,7 +103,7 @@
                 setattr(mod, x, _demandmod(x, mod.__dict__, mod.__dict__))
         return mod
 
-ignore = []
+ignore = ['_hashlib']
 
 def enable():
     "enable global demand-loading of modules"