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Cabal.Distribution.Compiler: add Functor, Foldable, and Traversable instances for PerCompilerFlavor #6763

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Merged
merged 1 commit into from
May 7, 2020
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Cabal.Distribution.Compiler: add Functor, Foldable, and Traversable instances for PerCompilerFlavor #6763

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6 changes: 5 additions & 1 deletion Cabal/Distribution/Compiler.hs
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Original file line number Diff line number Diff line change
@@ -1,5 +1,8 @@
{-# LANGUAGE DeriveDataTypeable #-}
{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE DeriveFunctor #-}
{-# LANGUAGE DeriveFoldable #-}
{-# LANGUAGE DeriveTraversable #-}

-----------------------------------------------------------------------------
-- |
Expand Down Expand Up @@ -122,7 +125,8 @@ defaultCompilerFlavor = case buildCompilerFlavor of
-- Cabal parses only @ghc-options@ and @ghcjs-options@, others are omitted.
--
data PerCompilerFlavor v = PerCompilerFlavor v v
deriving (Generic, Show, Read, Eq, Typeable, Data)
deriving (Generic, Show, Read, Eq, Typeable, Data, Functor, Foldable
, Traversable)

instance Binary a => Binary (PerCompilerFlavor a)
instance Structured a => Structured (PerCompilerFlavor a)
Expand Down