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Relax Monoid constraint to Semigroup for the Monoid Chunk instance (#331)
* Relax Monoid constraint to Semigroup for the Monoid Chunk instance * Bump lower bound of ansi-wl-pprint to be compatible with previous Monoid -> Semigroup change * Removed 7.0 and 7.2 from supported GHC versions
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@ -1,6 +1,4 @@
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env:
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- GHCVER=7.0.4
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- GHCVER=7.2.2
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- GHCVER=7.4.2
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- GHCVER=7.6.3
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- GHCVER=7.8.4
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@ -16,6 +16,7 @@ module Options.Applicative.Help.Chunk
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import Control.Applicative
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import Control.Monad
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import Data.List.NonEmpty ( NonEmpty(..) )
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import Data.Maybe
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import Data.Semigroup
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import Prelude
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@ -45,10 +46,10 @@ instance Monad Chunk where
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return = pure
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m >>= f = Chunk $ unChunk m >>= unChunk . f
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instance Monoid a => Semigroup (Chunk a) where
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(<>) = chunked mappend
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instance Semigroup a => Semigroup (Chunk a) where
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(<>) = chunked (<>)
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instance Monoid a => Monoid (Chunk a) where
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instance Semigroup a => Monoid (Chunk a) where
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mempty = Chunk Nothing
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mappend = (<>)
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@ -69,9 +70,9 @@ chunked f (Chunk (Just x)) (Chunk (Just y)) = Chunk (Just (f x y))
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--
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-- > isEmpty . listToChunk = null
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-- > listToChunk = mconcat . fmap pure
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listToChunk :: Monoid a => [a] -> Chunk a
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listToChunk :: Semigroup a => [a] -> Chunk a
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listToChunk [] = mempty
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listToChunk xs = pure (mconcat xs)
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listToChunk (x:xs) = pure (sconcat (x :| xs))
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-- | Part of a constrained comonad instance.
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--
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@ -73,7 +73,7 @@ library
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, transformers >= 0.2 && < 0.6
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, transformers-compat >= 0.3 && < 0.7
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, process >= 1.0 && < 1.7
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, ansi-wl-pprint >= 0.6.6 && < 0.7
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, ansi-wl-pprint >= 0.6.8 && < 0.7
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if !impl(ghc >= 8)
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build-depends: semigroups >= 0.10 && < 0.19
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