X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=Data%2FDynamic.hs;fp=Data%2FDynamic.hs;h=df64c389bf786a1a4a0d96a8392cc3e70ae54f9d;hb=4475dcabbc206d1cf0fc3fee88f600a4791d948c;hp=b83bbfa89c649ce0da0636776960eaccaf242b41;hpb=7b7fc46fd296030068c6682b37c028656fdf4a55;p=ghc-base.git

diff --git a/Data/Dynamic.hs b/Data/Dynamic.hs
index b83bbfa..df64c38 100644
--- a/Data/Dynamic.hs
+++ b/Data/Dynamic.hs
@@ -1,4 +1,7 @@
 {-# LANGUAGE CPP, NoImplicitPrelude #-}
+#ifdef __GLASGOW_HASKELL__
+{-# LANGUAGE DeriveDataTypeable, StandaloneDeriving #-}
+#endif
 
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