[Haskell-cafe] ghc 7.2.1 Generics problem

[José Pedro Magalhães]

Thanks, you spotted another mistake on that page, I corrected it.

Make sure to have a look at the functions in
http://hackage.haskell.org/package/generic-deriving too; I'm sure those
compile :-)


Pedro

2011/11/3 Magicloud Magiclouds <magicloud.magiclouds at gmail.com>

> 2011/11/1 José Pedro Magalhães <jpm at cs.uu.nl>:
> > Oh, right, I see that some things on that page need updating; I'll do so.
> >
> > Thanks,
> > Pedro
> >
> > On Tue, Nov 1, 2011 at 09:33, Magicloud Magiclouds
> > <magicloud.magiclouds at gmail.com> wrote:
> >>
> >> On Tue, Nov 1, 2011 at 1:59 PM, Andres Löh <andres.loeh at googlemail.com>
> >> wrote:
> >> > Hi.
> >> >
> >> >>  I do not know why, my ghc 7.2.1 does not seem to support
> >> >> DeriveRepresentable. I compiled the ghc 7.2.1 myself by ghc 7.0.4.
> All
> >> >> options default.
> >> >>
> >> >> $ ghc Types/TopTalkerRecord.hs
> >> >>
> >> >> Types/TopTalkerRecord.hs:2:14:
> >> >>    Unsupported extension: DeriveRepresentable
> >> >
> >> > There's no extension of that name in 7.2.1. Do you mean DeriveGeneric?
> >> >
> >> > Cheers,
> >> >  Andres
> >> >
> >>
> >> I do not know. I will try that.
> >> I got the name from http://www.haskell.org/haskellwiki/Generics.
> >>
> >> --
> >> 竹密岂妨流水过
> >> 山高哪阻野云飞
> >>
> >> _______________________________________________
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> >> http://www.haskell.org/mailman/listinfo/haskell-cafe
> >
> >
>
> Thank you. I saw the page was updated.
> So I followed the document. And got stuck again.
>
> Copying the code and compile, I got:
>
> 25instance (GSerialize a) => GSerialize (M1 i a) where
> 26  gput (M1 x) = gput x
>
> test.hs:25:40:
>    `M1 i a' is not applied to enough type arguments
>    The first argument of `GSerialize' should have kind `* -> *',
>    but `M1 i a' has kind `(* -> *) -> * -> *'
>    In the instance declaration for `GSerialize (M1 i a)'
>
> --
> 竹密岂妨流水过
> 山高哪阻野云飞
>
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