Compiling Prelude.hs or complete base to external core

[Alp Mestanogullari]

Isn't this due to the recent Typeable changes, described here:
http://hackage.haskell.org/trac/ghc/wiki/GhcKinds/PolyTypeable ?


On Mon, Mar 25, 2013 at 3:16 PM, Carlos Lopez Camey <c.lopez at kmels.net>wrote:

>  Hi, I have an interpreter for external core and I would like to read the
> definitions in base:Prelude. After jumping over some obstacles [0], I find
> myself here:
>
> > ghc --make -fext-core -I./include -cpp Prelude.hs
>
> GHC/Num.lhs:65:27:
>     Could not deduce (base:GHC.Num.Num a) arising from the literal `0'
>     from the context (Num a)
>       bound by the class declaration for `Num'
>       at GHC/Num.lhs:(42,1)-(65,31)
>     Possible fix:
>       add (base:GHC.Num.Num a) to the context of
>         the class declaration for `Num'
>     In the first argument of `(-)', namely `0'
>     In the expression: 0 - x
>     In an equation for `negate': negate x = 0 - x
>
> If I jump over this one with some nonsense fix (e.g. negate = id) then I
> get
>
> GHC/Exception.lhs:47:14:
>     Cannot derive well-kinded instance of form `Typeable
>                                                   * (SomeException ...)'
>       Class `Typeable' expects an argument of kind `k'
>     In the data declaration for `SomeException'
>
> GHC/Exception.lhs:169:24:
>     Cannot derive well-kinded instance of form `Typeable
>                                                   * (ErrorCall ...)'
>       Class `Typeable' expects an argument of kind `k'
>     In the newtype declaration for `ErrorCall'
>
> GHC/Exception.lhs:186:22:
>     Cannot derive well-kinded instance of form `Typeable
>                                                   * (ArithException ...)'
>       Class `Typeable' expects an argument of kind `k'
>     In the data declaration for `ArithException'
>
> Do you have any tips that help me? I am using the HEAD version of base and
> GHC 7.6.2.
>
> I also tried base-4.6.0.0 but the file HsFFI.h is looked upon and is not
> found or is not generated by ./configure (ieee-flpt.h: is a similar case,
> although I could find this one on the web [1]).
>
> [0] Manually compiled GHC/Event/{Poll,Clock,EPoll} with hsc2hs
> [1] http://darcs.haskell.org/packages/base/include/ieee-flpt.h
>
> Thanks
>
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>


-- 
Alp Mestanogullari
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