Hi,
I try to make my way through #7021 [1]. Unfortunately, there is nothing in the ticket about what should be expected from the code given as example.
I came with an implementation and I would like feedback from you guys. So, considering this snippet:
--
{-# LANGUAGE ConstraintKinds #-}
type IOable a = (Show a, Read a)
foo :: IOable a => a
foo = undefined--
This is what I got now when pretty-printing TH.Info after reify "foo" call:
VarI Tuple.foo (ForallT [PlainTV a_1627398594] [TupleP 2 [AppT (ConT GHC.Show.Show) (VarT a_1627398594),AppT (ConT GHC.Read.Read) (VarT a_1627398594)]] (VarT a_1627398594)) Nothing (Fixity 9 InfixL)
Does that sound right to you ?
Thanks for your time
-- Yorick