haskell-enumerator: patch to build with ghc-8.4

haskell-enumerator (0.4.20-10) unstable; urgency=medium

  * Patch to build with ghc-8.4

 -- Dmitry Bogatov <KAction@gnu.org>  Fri, 05 Oct 2018 00:56:15 +0000

haskell-enumerator (0.4.20-9) unstable; urgency=medium

  * Remove build dependency on libghc-text-dev (provided by ghc-8.4.3)

Index: haskell-enumerator/lib/Data/Enumerator/Internal.hs

===================================================================

--- haskell-enumerator.orig/lib/Data/Enumerator/Internal.hs

+++ haskell-enumerator/lib/Data/Enumerator/Internal.hs

@@ -71,6 +71,9 @@ instance Monad Stream where

 	Chunks xs >>= f = mconcat (fmap f xs)

 	EOF >>= _ = EOF

+instance Semigroup (Stream a) where

+	(<>) = mappend

+

 instance Monoid (Stream a) where

 	mempty = Chunks mempty

 	mappend (Chunks xs) (Chunks ys) = Chunks (xs ++ ys)

patch-to-build-with-ghc-8.4.patch