#9242: Implement {-# OVERLAPPABLE #-} and {-# INCOHERENT #-} pragmas -------------------------------------+------------------------------------- Reporter: simonpj | Owner: diatchki Type: feature | Status: new request | Milestone: Priority: normal | Version: 7.8.2 Component: Compiler | Keywords: Resolution: | Architecture: Unknown/Multiple Operating System: | Difficulty: Unknown Unknown/Multiple | Blocked By: Type of failure: | Related Tickets: None/Unknown | Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Comment (by jrp): The ghc build system itself still uses -XOverlappingInstances and so presumably needs to be updated too. {{{ "rm" -f libraries/haskeline/dist- install/build/.depend-v-dyn-p-dyn.haskell.tmp "inplace/bin/ghc-stage1" -M -static -O -H64m -package-name haskeline-0.7.1.2 -hide-all-packages -i -ilibraries/haskeline/. -ilibraries/haskeline/dist-install/build -ilibraries/haskeline/dist- install/build/autogen -Ilibraries/haskeline/dist-install/build -Ilibraries/haskeline/dist-install/build/autogen -Ilibraries/haskeline/includes -optP-DUSE_GHC_ENCODINGS -optP-DTERMINFO -optP-include -optPlibraries/haskeline/dist- install/build/autogen/cabal_macros.h -package base-4.7.1.0 -package bytestring-0.10.4.0 -package containers-0.5.5.1 -package directory-1.2.1.0 -package filepath-1.3.0.2 -package terminfo-0.4.0.0 -package transformers-0.4.1.0 -package unix-2.7.0.2 -Wall -XHaskell98 -XForeignFunctionInterface -XRank2Types -XFlexibleInstances -XTypeSynonymInstances -XFlexibleContexts -XExistentialQuantification -XScopedTypeVariables -XGeneralizedNewtypeDeriving -XMultiParamTypeClasses -XOverlappingInstances -XUndecidableInstances -XCPP -XDeriveDataTypeable -XPatternGuards -O2 -no-user-package-db -rtsopts -odir libraries/haskeline/dist-install/build -hidir libraries/haskeline/dist- install/build -stubdir libraries/haskeline/dist-install/build -dep- makefile libraries/haskeline/dist- install/build/.depend-v-dyn-p-dyn.haskell.tmp -dep-suffix "" -dep-suffix "dyn_" -dep-suffix "p_" -dep-suffix "dyn_" -include-pkg-deps libraries/haskeline/./System/Console/Haskeline.hs libraries/haskeline/./System/Console/Haskeline/Completion.hs libraries/haskeline/./System/Console/Haskeline/MonadException.hs libraries/haskeline/./System/Console/Haskeline/History.hs libraries/haskeline/./System/Console/Haskeline/IO.hs libraries/haskeline/./System/Console/Haskeline/Backend.hs libraries/haskeline/./System/Console/Haskeline/Backend/WCWidth.hs libraries/haskeline/./System/Console/Haskeline/Command.hs libraries/haskeline/./System/Console/Haskeline/Command/Completion.hs libraries/haskeline/./System/Console/Haskeline/Command/History.hs libraries/haskeline/./System/Console/Haskeline/Command/KillRing.hs libraries/haskeline/dist- install/build/System/Console/Haskeline/Directory.hs libraries/haskeline/./System/Console/Haskeline/Emacs.hs libraries/haskeline/./System/Console/Haskeline/InputT.hs libraries/haskeline/./System/Console/Haskeline/Key.hs libraries/haskeline/./System/Console/Haskeline/LineState.hs libraries/haskeline/./System/Console/Haskeline/Monads.hs libraries/haskeline/./System/Console/Haskeline/Prefs.hs libraries/haskeline/./System/Console/Haskeline/RunCommand.hs libraries/haskeline/./System/Console/Haskeline/Term.hs libraries/haskeline/./System/Console/Haskeline/Command/Undo.hs libraries/haskeline/./System/Console/Haskeline/Vi.hs libraries/haskeline/./System/Console/Haskeline/Recover.hs libraries/haskeline/dist- install/build/System/Console/Haskeline/Backend/Posix.hs libraries/haskeline/./System/Console/Haskeline/Backend/Posix/Encoder.hs libraries/haskeline/./System/Console/Haskeline/Backend/DumbTerm.hs libraries/haskeline/./System/Console/Haskeline/Backend/Terminfo.hs on the commandline: Warning: -XOverlappingInstances is deprecated: instead use per-instance pragmas OVERLAPPING/OVERLAPPABLE/OVERLAPS }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9242#comment:31 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler