\begin{code}
-{-# OPTIONS_GHC -XNoImplicitPrelude #-}
+{-# LANGUAGE CPP, NoImplicitPrelude #-}
{-# OPTIONS_GHC -fno-warn-missing-signatures #-}
{-# OPTIONS_HADDOCK not-home #-}
+
-----------------------------------------------------------------------------
-- |
-- Module : GHC.Conc