-- | -- -- Module : GHC.OverloadedLabels -- Copyright : (c) Adam Gundry 2015-2016 -- License : see libraries/base/LICENSE -- -- Maintainer : ghc-devs@haskell.org -- Stability : internal -- Portability : non-portable (GHC extensions) -- -- This module defines the 'IsLabel' class used by the -- @OverloadedLabels@ extension. See the -- <https://gitlab.haskell.org/ghc/ghc/wikis/records/overloaded-record-fields/overloaded-labels wiki page> -- for more details. -- -- When @OverloadedLabels@ is enabled, if GHC sees an occurrence of -- the overloaded label syntax @#foo@, it is replaced with -- -- > fromLabel @"foo" :: alpha -- -- plus a wanted constraint @IsLabel "foo" alpha@. -- -- Note that if @RebindableSyntax@ is enabled, the desugaring of -- overloaded label syntax will make use of whatever @fromLabel@ is in -- scope. -- module GHC.OverloadedLabels (IsLabel(..) ) where import GHC.Internal.OverloadedLabels