diff -r c130d092042a -r 526e4597cca5 mercurial/pycompat.py
--- a/mercurial/pycompat.py	Fri Apr 07 16:00:44 2017 +0530
+++ b/mercurial/pycompat.py	Fri Apr 07 23:35:51 2017 +0530
@@ -174,6 +174,7 @@
     hasattr = _wrapattrfunc(builtins.hasattr)
     setattr = _wrapattrfunc(builtins.setattr)
     xrange = builtins.range
+    unicode = str
 
     def open(name, mode='r', buffering=-1):
         return builtins.open(name, sysstr(mode), buffering)