Re: [GHC] #15798: Flag to warn when deriving strategy is not explicitly specified

#15798: Flag to warn when deriving strategy is not explicitly specified -------------------------------------+------------------------------------- Reporter: andrewthad | Owner: (none) Type: feature request | Status: closed Priority: normal | Milestone: 8.8.1 Component: Compiler | Version: 8.6.1 Resolution: fixed | Keywords: deriving, | newcomer Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: | rename/should_compile/T15798{a,b,c} Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | https://gitlab.haskell.org/ghc/ghc/merge_requests/48 -------------------------------------+------------------------------------- Comment (by Ben Gamari ): In [changeset:"c121e33f9b039acf2ac6939af8bfafe593560039/ghc" c121e33f/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="c121e33f9b039acf2ac6939af8bfafe593560039" Add -Wmissing-deriving-strategies Warn users when -XDerivingStrategies is enabled but not used, at each potential use site. add -Wmissing-deriving-strategies Reviewers: bgamari, RyanGlScott Subscribers: andrewthad, rwbarton, carter GHC Trac Issues: #15798 Differential Revision: https://phabricator.haskell.org/D5451 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15798#comment:7 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler