#13957: Allow deriving multiparameter type classes with representationally equal arguments -------------------------------------+------------------------------------- Reporter: Iceland_jack | Owner: (none) Type: feature request | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.1 Resolution: | Keywords: 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): TODO What if the argument order of `SIEVE` were reversed, as with [https://hackage.haskell.org/package/profunctors-5.2/docs/Data-Profunctor- Sieve.html Sieve].. let's find a way to allow deriving that as well. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13957#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler