Re: Howto run guix.el correctly?

[ludo@gnu.org (Ludovic Courtès)]

Alex Kost <alezost@gmail.com> skribis:

> As I wrote at
> <http://lists.gnu.org/archive/html/guix-devel/2014-08/msg00165.html>, I
> see the only way to achieve that:
>
> - to modify emacs package recipes so that they will provide some files
>   with all required initial configuration (and to name such file
>   "…-autoloads.el", for example);

‘FOO-autoloads.el’ is the most common convention, right?

> - to modify “guix-init.el” so that (require 'guix-init) will load those
>   autoloads files;
>
> - to write some elisp code for auto-loading "…-autoloads.el" on the fly
>   — i.e., to make it possible to install an Emacs package using
>   "guix.el" and to use "M-x <package-command>" immediately.

Yep, that sounds good.

> So if it's acceptable, what about modifying the current recipes
> step-by-step.  With geiser it's easy: as "geiser-install.el" provides
> all required setup (including autoloads for "M-x …" commands),
> "geiser-autoloads.el" may just be a symlink to "geiser-install.el".  I'm
> attaching the patch for that.

Yes.

> +    (arguments
> +     '(#:phases (alist-cons-after
> +                 'install 'post-install
> +                 (lambda* (#:key outputs #:allow-other-keys)
> +                   (symlink "geiser-install.el"
> +                            (string-append (assoc-ref outputs "out")
> +                                           "/share/emacs/site-lisp/"
> +                                           "geiser-autoloads.el")))
> +                 %standard-phases)))

This particular instance won’t work because it’s called from
$top_builddir.

Actually, since it’s going to be used in most packages, what about
adding an ‘install-autoloads’ procedure in (guix build emacs-utils)?
So the above would become

  (alist-cons-after
   'install 'post-install
   (lambda* (#:key outputs #:allow-other-keys)
     (install-autoloads (assoc-ref outputs "out")))
   %standard-phases)

Or better yet, (guix build emacs-utils) could provide
%standard-emacs-phases.

WDYT?

Thanks,
Ludo’.