\begin{code}
rnTopMonoBinds mbinds sigs
= mappM lookupBndrRn binder_rdr_names `thenM` \ binder_names ->
+ -- No need to extend the environment; that has been done already
+
bindPatSigTyVars (collectSigTysFromMonoBinds mbinds) $
+ -- Hmm; by analogy with Ids, this doesn't look right
let
bndr_name_set = mkNameSet binder_names
in