Add missing DeriveDataTypeable

This commit is contained in:
David Turner 2017-05-16 16:26:47 +00:00
parent 7d07db7ed3
commit f3ac10a1c4

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@ -1,6 +1,7 @@
{-# LANGUAGE CPP #-}
{-# LANGUAGE ConstraintKinds #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE DeriveDataTypeable #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE GeneralizedNewtypeDeriving #-}