--- a/mercurial/localrepo.py
+++ b/mercurial/localrepo.py
@@ -54,7 +54,7 @@ class localrepository(repo.repository):
         except IOError:
             pass
 
-        v = self.ui.revlogopts
+        v = self.ui.configrevlog()
         self.revlogversion = int(v.get('format', revlog.REVLOG_DEFAULT_FORMAT))
         self.revlogv1 = self.revlogversion != revlog.REVLOGV0
         fl = v.get('flags', None)

--- a/mercurial/ui.py
+++ b/mercurial/ui.py
@@ -30,8 +30,6 @@ class ui(object):
             self.traceback = traceback
 
             self.updateopts(verbose, debug, quiet, interactive)
-            self.diffcache = None
-            self.revlogopts = self.configrevlog()
         else:
             # parentui may point to an ui object which is already a child
             self.parentui = parentui.parentui or parentui