--- a/rqlrewrite.py	Wed Nov 09 17:34:08 2011 +0100
+++ b/rqlrewrite.py	Wed Nov 09 18:41:12 2011 +0100
@@ -54,6 +54,7 @@
             if varname not in newroot.defined_vars or eschema(etype).final:
                 continue
             allpossibletypes.setdefault(varname, set()).add(etype)
+    # XXX could be factorized with add_etypes_restriction from rql 0.31
     for varname in sorted(allpossibletypes):
         var = newroot.defined_vars[varname]
         stinfo = var.stinfo