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{-# OPTIONS_GHC -Wall -fno-warn-unused-binds #-} | |
{-# LANGUAGE CPP #-} | |
{-# LANGUAGE FlexibleContexts #-} | |
{-# LANGUAGE IncoherentInstances #-} | |
{-# LANGUAGE RankNTypes #-} | |
{-# LANGUAGE ScopedTypeVariables #-} | |
#if __GLASGOW_HASKELL__ >= 708 | |
{-# LANGUAGE RoleAnnotations #-} | |
#endif |