need to import Data.Tuple explicitly to get dependencies right.
% -----------------------------------------------------------------------------
-% $Id: Enum.lhs,v 1.3 2001/07/03 14:13:32 simonmar Exp $
+% $Id: Enum.lhs,v 1.4 2001/07/04 11:29:26 simonmar Exp $
%
% (c) The University of Glasgow, 1992-2000
%
import {-# SOURCE #-} GHC.Err ( error )
import GHC.Base
+import Data.Tuple () -- for dependencies
default () -- Double isn't available yet
\end{code}