_interface_ Subst 1 _exports_ Subst Subst mkTyVarSubst substTy ; _declarations_ 1 data Subst; 1 mkTyVarSubst _:_ [Var.TyVar] -> [TypeRep.Type] -> Subst ;; 1 substTy _:_ Subst -> TypeRep.Type -> TypeRep.Type ;;