Re: [PATCH] gnu: graphviz: Enable Guile library.

[ludo@gnu.org (Ludovic Courtès)]

Roel Janssen <roel@gnu.org> skribis:

> What is the preferred way to include the module file to the package?
> Should I create another package with this file alone, and use it as a
> propagated input for graphviz?

Could you first submit it upstream?

> I now have a graphviz-guile package with a graphviz.scm module file.
>
> Where should I link/copy/move libgv_guile.so?
>
> I tried:
> $PACKAGE_OUTPUT/lib/
> $PACKAGE_OUTPUT/lib/guile/2.0/
> $PACKAGE_OUTPUT/lib/guile/2.0/extensions/
>
> But it seems my system only looks in:
> /lib
> /gnu/store/...-gcc-4.9.3-lib/lib/
> /gnu/store/...-glibc-2.22/lib/
> /gnu/store/...-guile-2.0.11/lib/

‘load-extension’ searches for shared objects in the extension directory:

--8<---------------cut here---------------start------------->8---
scheme@(guix gexp)> (assoc-ref %guile-build-info 'extensiondir)
$14 = "/home/ludo/soft/lib/guile/2.0/extensions"
--8<---------------cut here---------------end--------------->8---

… and in whatever ‘LTDL_LIBRARY_PATH’ points to
(info "(libtool) Libltdl interface").

HTH!

Ludo’.