--- a/hgext3rd/evolve/compat.py	Sat Mar 09 19:25:34 2019 +0530
+++ b/hgext3rd/evolve/compat.py	Wed Mar 13 17:32:14 2019 +0530
@@ -420,7 +420,9 @@
 
     return copy, movewithdir, diverge, renamedelete, dirmove
 
-if util.safehasattr(copies, '_fullcopytracing'):
+# hg <= 4.9 compat (7694b685bb10)
+fixupstreamed = util.safehasattr(scmutil, '_movedirstate')
+if not fixupstreamed:
     copies._fullcopytracing = fixedcopytracing
 
 if not util.safehasattr(obsutil, "_succs"):