From 39066eba1d4068f59c150e0516c9c18d86309eed Mon Sep 17 00:00:00 2001
From: John MacFarlane <jgm@berkeley.edu>
Date: Sun, 13 Aug 2017 10:00:46 -0700
Subject: Added some Functor constraints needed for ghc 7.8.

---
 src/Text/Pandoc/Writers/Shared.hs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Text/Pandoc/Writers/Shared.hs b/src/Text/Pandoc/Writers/Shared.hs
index c6a5fdaf8..8f1a06688 100644
--- a/src/Text/Pandoc/Writers/Shared.hs
+++ b/src/Text/Pandoc/Writers/Shared.hs
@@ -76,7 +76,7 @@ metaToJSON opts blockWriter inlineWriter meta
 
 -- | Like 'metaToJSON', but does not include variables and is
 -- not sensitive to 'writerTemplate'.
-metaToJSON' :: (Monad m, ToJSON a)
+metaToJSON' :: (Functor m, Monad m, ToJSON a)
            => ([Block] -> m a)
            -> ([Inline] -> m a)
            -> Meta
@@ -99,7 +99,7 @@ addVariablesToJSON opts metadata =
   where combineMetadata (Object o1) (Object o2) = Object $ H.union o1 o2
         combineMetadata x _                     = x
 
-metaValueToJSON :: (Monad m, ToJSON a)
+metaValueToJSON :: (Functor m, Monad m, ToJSON a)
                 => ([Block] -> m a)
                 -> ([Inline] -> m a)
                 -> MetaValue
-- 
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