Re: How to add Guile support to a package

[Antonio Ceballos]

Hi Ludo,

Thanks for your support.

This is only a rough plan, but one of the things that I have in mind is
to allow users provide their own evaluation function as an Scheme
expression. That would be possible when GNU Chess is run in a
especial new mode whereby the Guile evaluation function would replace
the built-in evaluation function.

For that purpose, I think that I need both to embed Guile into Chess,
and to export some primitives that could be used as building blocks
for the Scheme evaluation function.

Does it make sense?

Regards,
Antonio


On Mon, Jan 5, 2015 at 6:08 PM, Ludovic Courtès <address@hidden> wrote:
> Hi,
>
> I think the question to ask is what you want to enable with Guile.
> Probably you’ll want to export some of the functions and data types of
> Chess to Scheme, which can be done using the libguile C interface.
>
> Another question is whether you want to embed Guile into Chess, or
> whether you want to extend Guile with Chess.  In the latter case, Chess
> would essentially be a Scheme library.  This is best because it opens
> for more possibilities, and makes it easier to work with the Scheme API
> of Chess.  More info on this trade-off at
> <https://twistedmatrix.com/users/glyph/rant/extendit.html>.
>
> Since you want Guile to be an optional dependency, embedding may be more
> appropriate, though.
>
> HTH,
> Ludo’.