#12923: MultiParamTypeClasses + ExtendedDefaultRules -------------------------------------+------------------------------------- Reporter: amindfv | Owner: Type: feature request | Status: patch Priority: normal | Milestone: 8.2.1 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): Phab:D2822 Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonpj): Turns out that back-pedaling on #8155 doesn't break #8155! So I'm going to do that. It's no documented feature, and it'll make more programs do defaulting. That leaves your tiny patch. It is no so small, and so well defined, that I think we should go ahead. Please do the user manual stuff and then we can land it. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12923#comment:17 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler