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Remove unused Semigroup imports. #5673

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Nov 9, 2018
Merged

Remove unused Semigroup imports. #5673

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8 changes: 7 additions & 1 deletion Cabal/Distribution/Compat/Prelude.hs
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Original file line number Diff line number Diff line change
Expand Up @@ -4,9 +4,11 @@
{-# LANGUAGE FlexibleContexts #-}

#ifdef MIN_VERSION_base
#define MINVER_base_411 MIN_VERSION_base(4,11,0)
#define MINVER_base_48 MIN_VERSION_base(4,8,0)
#define MINVER_base_47 MIN_VERSION_base(4,7,0)
#else
#define MINVER_base_411 (__GLASGOW_HASKELL__ >= 804)
#define MINVER_base_48 (__GLASGOW_HASKELL__ >= 710)
#define MINVER_base_47 (__GLASGOW_HASKELL__ >= 708)
#endif
Expand Down Expand Up @@ -90,10 +92,14 @@ module Distribution.Compat.Prelude (
-- * Text.PrettyPrint
(<<>>),
) where

-- We also could hide few partial function
import Prelude as BasePrelude hiding
( IO, mapM, mapM_, sequence, null, length, foldr, any, all
#if MINVER_base_411
-- As of base 4.11.0.0 Prelude exports part of Semigroup(..).
-- Hide this so we instead rely on Distribution.Compat.Semigroup.
, Semigroup(..)
#endif
#if MINVER_base_48
, Word
-- We hide them, as we import only some members
Expand Down