#15359: Quantified constraints do not work with equality constraints -------------------------------------+------------------------------------- Reporter: goldfire | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: 8.6.1 Component: Compiler | Version: 8.5 Resolution: | Keywords: | QuantifiedConstraints Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by goldfire): Oh dear. I see trouble a-brewing. I agree that `Coercible` and `~` should either both be allowed or both be rejected. But the implications in my OP are unimplementable, I think. So I'm lost as to how to specify this. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15359#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler