--- a/tests/pullext.py	Thu Aug 22 16:47:31 2019 -0700
+++ b/tests/pullext.py	Sun Aug 18 00:45:33 2019 +0300
@@ -13,6 +13,8 @@
     error,
     extensions,
     localrepo,
+)
+from mercurial.interfaces import (
     repository,
 )