--- a/hgext3rd/topic/evolvebits.py	Thu Apr 19 16:08:01 2018 +0200
+++ b/hgext3rd/topic/evolvebits.py	Thu Apr 19 16:12:37 2018 +0200
@@ -1,6 +1,8 @@
 import collections
 
-from . import compat
+from mercurial import (
+    obsutil,
+)
 
 # Copied from evolve 081605c2e9b6
 
@@ -73,14 +75,14 @@
         return p.rev()
     obs = repo[p]
     ui = repo.ui
-    newer = compat.successorssets(repo, obs.node())
+    newer = obsutil.successorssets(repo, obs.node())
     # search of a parent which is not killed
     while not newer:
         ui.debug("stabilize target %s is plain dead,"
                  " trying to stabilize on its parent\n" %
                  obs)
         obs = obs.parents()[0]
-        newer = compat.successorssets(repo, obs.node())
+        newer = obsutil.successorssets(repo, obs.node())
     if 1 < len(newer):
         # divergence case
         # we should pick as arbitrary one