pe (TyApp (TyCon "MutableArrayArray#") [x]) = "mkMutableArrayArrayPrimTy " ++ ppType x
ppT
ppType (TyApp (TyCon "MutableArrayArray#") [x]) = "mkMutableArrayArrayPrimTy " ++ ppType x
ppType (TyApp (TyCon "MutableArrayArray#") [x]) = "mkMutableArrayArrayPrimTy " ++ ppType x