| KindTypeFunction k1 k2 => "("+++kindToString k1+++")=>"+++kindToString k2
| KindUnliftedType => "#"
| KindUnboxedTuple => "(#)"
- | KindArgType => "?"
+ | KindArgType => "??"
| KindOpenType => "?"
end.
Instance KindToString : ToString Kind := { toString := kindToString }.