+{-# OPTIONS_GHC -fno-implicit-prelude #-}
-----------------------------------------------------------------------------
-- |
-- Module : System.IO.Unsafe
-----------------------------------------------------------------------------
module System.IO.Unsafe (
- -- * Unsafe 'IO' operations
+ -- * Unsafe 'System.IO.IO' operations
unsafePerformIO, -- :: IO a -> a
unsafeInterleaveIO, -- :: IO a -> IO a
) where
-import Prelude
-
#ifdef __GLASGOW_HASKELL__
-import GHC.IOBase
+import GHC.IOBase (unsafePerformIO, unsafeInterleaveIO)
+#endif
+
+#ifdef __HUGS__
+import Hugs.IOExts (unsafePerformIO, unsafeInterleaveIO)
+#endif
+
+#ifdef __NHC__
+import NHC.Internal (unsafePerformIO)
+#endif
+
+#if !__GLASGOW_HASKELL__ && !__HUGS__
+unsafeInterleaveIO :: IO a -> IO a
+unsafeInterleaveIO f = return (unsafePerformIO f)
#endif