#15839: DerivingStrategies defaulting warning has no associated enable/suppress flag -------------------------------------+------------------------------------- Reporter: tejon | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.6.1 Resolution: | Keywords: deriving, | newcomer Operating System: Unknown/Multiple | Architecture: Type of failure: Poor/confusing | Unknown/Multiple error message | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by tejon): Ah, good catch -- I guess I never tried without `DerivingStrategies`. I'll update the bug description, and include your minimum example. For flag name I nominate `-Wderiving-defaults`, after the pattern of `-Wtype-defaults`. It sounds like this would be an easy way to get my toes wet in the GHC codebase. If there's no argument with my flag suggestion, I'll try to implement it myself. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15839#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler