diff -r 383fdfa6bba9 -r 268662aac075 mercurial/revlogutils/constants.py
--- a/mercurial/revlogutils/constants.py	Thu Aug 22 16:47:31 2019 -0700
+++ b/mercurial/revlogutils/constants.py	Sun Aug 18 00:45:33 2019 +0300
@@ -9,7 +9,7 @@
 
 from __future__ import absolute_import
 
-from .. import (
+from ..interfaces import (
     repository,
 )