\end{code}
\begin{code}
-instance (Outputable name) => Outputable (Sig name) where
+instance (OutputableBndr name) => Outputable (Sig name) where
ppr sig = ppr_sig sig
-ppr_sig :: Outputable name => Sig name -> SDoc
+ppr_sig :: OutputableBndr name => Sig name -> SDoc
ppr_sig (Sig var ty)
= sep [ppr var <+> dcolon, nest 4 (ppr ty)]