--- a/hgext/qsync.py	Sun Dec 02 16:21:19 2012 +0100
+++ b/hgext/qsync.py	Mon Dec 17 14:33:01 2012 +0100
@@ -16,6 +16,7 @@
 from mercurial import error
 from mercurial import extensions
 from mercurial import phases
+from mercurial import obsolete
 
 ### old compat code
 #############################
@@ -85,8 +86,7 @@
                     review_list.append(patch_name)
                 except IOError:
                     oldnode = oldfiles[patch_name]
-                    evolve = extensions.find('evolve')
-                    newnodes = evolve.successorssets(repo, oldnode)
+                    newnodes = obsolete.successorssets(repo, oldnode)
                     if newnodes:
                         newnodes = [n for n in newnodes if n and n[0] in repo] # remove killing
                     if not newnodes:
@@ -177,7 +177,7 @@
         usedold.add(oldhex)
         oldname = str(oldname)
         oldnode = bin(oldhex)
-        newnodes = evolve.successorssets(repo, oldnode)
+        newnodes = obsolete.successorssets(repo, oldnode)
         if newnodes:
             newnodes = [n for n in newnodes if n and n[0] in repo] # remove killing
             if len(newnodes) > 1: