Fix build with GHC 7.8.x

Reviewed By: codemiller

Differential Revision: D6208494

fbshipit-source-id: 43a9935a992edae400f0c814e03752078e1ce3a2
This commit is contained in:
Simon Marlow 2017-11-01 09:36:35 -07:00 committed by Facebook Github Bot
parent 7dd2f18e08
commit 09f56fcf53

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@ -5,6 +5,7 @@
-- found in the LICENSE file. An additional grant of patent rights can
-- be found in the PATENTS file.
{-# LANGUAGE DeriveDataTypeable #-}
{-# LANGUAGE GADTs #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE OverloadedStrings #-}