#9526: Add missing Generic instances in base -------------------------------------+------------------------------------- Reporter: nh2 | Owner: dreixel Type: feature | Status: new request | Milestone: 7.10.1 Priority: normal | Version: 7.8.3 Component: | Keywords: libraries/base | Architecture: Unknown/Multiple Resolution: | Difficulty: Moderate (less Operating System: | than a day) Unknown/Multiple | Blocked By: Type of failure: | Related Tickets: None/Unknown | Test Case: | Blocking: 9527 | Differential Revisions: | -------------------------------------+------------------------------------- Comment (by dreixel): Actually, I'm thinking that perhaps we should delete the existing `Generic` instances for base types. They don't really add much; the only thing I can think of is that you can find out the module and datatype name. Other than that, any generic function will still have to provide adhoc behaviour for types such as `Int`, because there is no generic behaviour for these base types. Also, this doesn't really block #9527, as far as I can see. You can derive `Generic` for a datatype that contains `Integer`, for example, which doesn't have a `Generic` instance. Things only fail when you try to use a generic function that does not have an instance for `Integer`. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9526#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler