#14832: QuantifiedConstraints: Adding to the context causes failure -------------------------------------+------------------------------------- Reporter: Iceland_jack | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.5 Resolution: | Keywords: | QuantifiedConstraints wipT2893 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 Iceland_jack): Is there hope for the user to guide this process and leaving the definition of `Trans` intact (not having to create `CCategory`)? If this were a rank-2 function we can explicitly instantiate `xx` `yy` `zz` {{{#!hs foo :: R X Y -> R Y Z -> (forall xx yy zz. (R xx yy, R yy zz) => R xx zz) -> R X Y foo xy yz f = f @X @Y @Z (xy, yz) }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14832#comment:11 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler