#13065: Prohibit user-defined Generic and Generic1 instances -------------------------------------+------------------------------------- Reporter: dfeuer | Owner: Type: feature request | Status: new Priority: normal | Milestone: 8.4.1 Component: Compiler | Version: 8.0.1 Resolution: | Keywords: Generics Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: Other | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by dfeuer): Yes, sorry. I forgot the real troubles were `Rep` and `Rep1` rather than `Generic` and `Generic1`. One possible variation might be to disassociate the families from the classes, and only restrict the former. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13065#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler