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add ArrowChoice=>GArrowSum instance
[ghc-base.git]
/
System
/
Timeout.hs
diff --git
a/System/Timeout.hs
b/System/Timeout.hs
index
dbd7181
..
df33625
100644
(file)
--- a/
System/Timeout.hs
+++ b/
System/Timeout.hs
@@
-1,4
+1,7
@@
{-# LANGUAGE CPP #-}
+#ifdef __GLASGOW_HASKELL__
+{-# LANGUAGE DeriveDataTypeable, StandaloneDeriving #-}
+#endif
-------------------------------------------------------------------------------
-- |