Ulf Norell ulfn at
Sun Oct 17 11:47:23 EDT 2004

> Keean Schupke <k.schupke at> writes:
>> Yes, I could quite easily write the generator in TemplateHaskell (have
>> played with it before)
>> _but_ I don't like the $(xxx) syntax... Perhaps if Simon could be
>> persuaded to allow deriving
>> clauses to be defined in TH?
>> data X x = X x
>> $(deriveMyClass (reify X))
>> could perhaps be defined from
>> data X x = X x deriving MyClass
>> I saw the same suggestion earlier today on the Haskell list...
> Check out Ulf Norell's IOHCC submission, his DeriveData.hs module does
> this,
> though I can't tell if it will work for parameterized types.

It doesn't. A version that does can be downloaded from

/ Ulf

More information about the Glasgow-haskell-users mailing list