[project @ 2005-01-11 16:04:08 by simonmar]

[ghc-base.git] / System / IO / Unsafe.hs

diff --git a/System/IO/Unsafe.hs b/System/IO/Unsafe.hs
index 8fafec4..96a252e 100644 (file)
--- a/System/IO/Unsafe.hs
+++ b/System/IO/Unsafe.hs
@@ -1,3 +1,4 @@
+{-# OPTIONS_GHC -fno-implicit-prelude #-}
 -----------------------------------------------------------------------------
 -- |
 -- Module      :  System.IO.Unsafe
@@ -18,8 +19,19 @@ module System.IO.Unsafe (
    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)
+#endif
+
+#ifdef __NHC__
+import NHC.Internal (unsafePerformIO)
+#endif
+
+#ifndef __GLASGOW_HASKELL__
+unsafeInterleaveIO :: IO a -> IO a
+unsafeInterleaveIO f = return (unsafePerformIO f)
 #endif