Am Montag, 24. April 2006 14:36 schrieb Brian Hulley:
> Thanks - I'm glad it's not just me!
> In the meantime, I found a better workaround (since the type decl using a
> class name is not legal Haskell) is just to use -cpp to preprocess for both
> ghc and haddock so that haddock sees explicitly defined dummy instances
> instead of a newtype deriving clause, then perfect results are obtained...
This workaround is actually "state-of-the-art"! :-P If you look at the
hierarchical libraries, there is often code like:
data VertexArrayDescriptor a =
VertexArrayDescriptor !NumComponents !DataType !Stride !(Ptr a)
#ifdef __HADDOCK__
-- Help Haddock a bit, because it doesn't do any instance inference.
instance Eq (VertexArrayDescriptor a)
instance Ord (VertexArrayDescriptor a)
instance Show (VertexArrayDescriptor a)
#else
deriving ( Eq, Ord, Show )
#endif
Cheers,
S.
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