    {-# LANGUAGE Safe #-}

    -- |
    --
    -- Module      :  GHC.IO.SubSystem
    -- Copyright   :  (c) The University of Glasgow, 2017
    -- License     :  see libraries/base/LICENSE
    --
    -- Maintainer  :  libraries@haskell.org
    -- Stability   :  internal
    -- Portability :  non-portable
    --
    -- The 'IoSubSystem' control interface.  These methods can be used to disambiguate
    -- between the two operations.
    --
    -- /The API of this module is unstable and not meant to be consumed by the general public./
    -- If you absolutely must depend on it, make sure to use a tight upper
    -- bound, e.g., @base < 4.X@ rather than @base < 5@, because the interface can
    -- change rapidly without much warning.
    --

    module GHC.IO.SubSystem
        (withIoSubSystem,
         withIoSubSystem',
         whenIoSubSystem,
         ioSubSystem,
         IoSubSystem(..),
         conditional,
         (<!>),
         isWindowsNativeIO
         ) where

    import GHC.Internal.IO.SubSystem