On Jul 27, 2015, at 9:48 AM, Simon Peyton Jones <simo...@microsoft.com> wrote: > > Making type inference (and system FC) exploit negative info would be a Big > Deal, I think.
Yes. Gabor points out a known infelicity with the interaction between closed type families and GADTs. But I agree with Simon that fixing it would indeed be a Big Deal, and not yet worth the very considerable effort required. Richard _______________________________________________ ghc-devs mailing list ghc-devs@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs
