--- a/mercurial/obsolete.py	Sun Mar 04 10:34:09 2018 -0500
+++ b/mercurial/obsolete.py	Tue Mar 20 14:12:05 2018 +0800
@@ -148,6 +148,8 @@
 
     return _getoptionvalue(repo, option)
 
+# Creating aliases for marker flags because evolve extension looks for
+# bumpedfix in obsolete.py
 bumpedfix = obsutil.bumpedfix
 usingsha256 = obsutil.usingsha256