diff -r 151cc3b3d799 -r df448de7cf3b mercurial/manifest.py
--- a/mercurial/manifest.py	Sat Aug 13 12:18:58 2016 +0900
+++ b/mercurial/manifest.py	Sat Aug 13 12:23:56 2016 +0900
@@ -19,11 +19,12 @@
 from . import (
     error,
     mdiff,
-    parsers,
+    policy,
     revlog,
     util,
 )
 
+parsers = policy.importmod(r'parsers')
 propertycache = util.propertycache
 
 def _parsev1(data):