import TcType ( SYN_IE(TcType), TcMaybe, newTyVarTy, newTyVarTys, tcInstId )
import Unify ( unifyTauTy, unifyTauTyList, unifyTauTyLists )
import TcType ( SYN_IE(TcType), TcMaybe, newTyVarTy, newTyVarTys, tcInstId )
import Unify ( unifyTauTy, unifyTauTyList, unifyTauTyLists )