> After trying a bit more, I found out how to fix the problem.
>
>
> > data Blah = Blah
>
> > type Tuple = (Blah,Int)
>
> > instance Eq Blah
> > instance Ord Blah
> > instance Read Blah
> > instance Show Blah
>
> Adding the previous 4 dummy instance declarations makes
> this fragment to become acceptable to ghc-3.00.
>
> > instance Show Tuple where
> > showsPrec _ _ _
> > = error []
Well it *shouldn't* have fixed the problem!
instance Show Tuple overlaps with instance Show (a,b).
Now that's a bug!
(The proper way to fix the problem is to define Tuple as a
new type.)
S
