[Haskell-cafe] Non-derivable Typeable

[José Pedro Magalhães]

Won't it derive it with StandaloneDeriving?


Cheers,
Pedro

On Tue, Jan 22, 2013 at 1:28 PM, Roman Cheplyaka <roma at ro-che.info> wrote:

> I need to declare a Typeable instance for a type which has an argument
> of kind * -> *. GHC refuses to derive it.
>
> What is a recommended way to go about it?
>
> In particular, if I write the instance by hand, how important is the
> fingerprint, and how could I generate it?
>
> Roman
>
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