module TcUnify where
import TcType ( TcTauType )
import TcRnTypes( TcM )
-import Coercion (CoercionI)
+import Coercion (Coercion)
-- This boot file exists only to tie the knot between
-- TcUnify and TcSimplify
-unifyType :: TcTauType -> TcTauType -> TcM CoercionI
+unifyType :: TcTauType -> TcTauType -> TcM Coercion
\end{code}