#15039: Bizarre pretty-printing of inferred Coercible constraint in partial type signature -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: 8.6.1 Component: Compiler (Type | Version: 8.4.1 checker) | Keywords: Resolution: | PartialTypeSignatures, TypeInType Operating System: Unknown/Multiple | Architecture: Type of failure: Poor/confusing | Unknown/Multiple error message | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by RyanGlScott): comment:5 sounds fine, but it only addresses problem (2). What about problem (1)? We still have GHC reporting that the kind of `Coercible a b` is `TYPE (TupleRep '[])`, which is utterly bogus. It seems like if `-fprint-equality-relations` is disabled, then we'd want to print the kind `Constraint` instead, yes? Is that feasible with the way partial type signature reporting currently works? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15039#comment:6 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler