#15622: Generalize `E{0,1,2,3,6,9,12}` from `Data.Fixed` -------------------------------------+------------------------------------- Reporter: rockbmb | Owner: rockbmb Type: feature request | Status: new Priority: normal | Milestone: 8.6.1 Component: Core Libraries | Version: 8.4.3 Resolution: | Keywords: base, | Data.Fixed 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 rockbmb): Since no code from Hackage derives instances against these types currently, does anyone disagree it is safe to assume no code (published on Hackage) will break from this change? Projects not uploaded to Hackage or that are closed-source and rely on GHC may have issues if they have instances defined for `E0/E1...`, but I do not think they will be too great. In these cases, would the addition of `FlexibleInstances` be problematic? I do not think so, but that is my opinion. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15622#comment:13 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler