Re: Emacs integration for 'guix shell'

[Maxim Cournoyer]

Hi,

"Thompson, David" <dthompson2@worcester.edu> writes:

> On Mon, Sep 26, 2022 at 10:44 PM Maxim Cournoyer
> <maxim.cournoyer@gmail.com> wrote:
>>
>> Hi,
>>
>> Olivier Dion via "Development of GNU Guix and the GNU System
>> distribution." <guix-devel@gnu.org> writes:
>>
>> [...]
>>
>> > I have the following in my .dir-locals.el for my library libpatch.  The
>> > idea is the same, but without direnv:
>> >
>> > ((nil
>> >   . ((eval .
>> >       (let ((root (locate-dominating-file
>> >                    default-directory ".dir-locals.el")))
>> >         (when root
>> >           (let ((real-root (directory-file-name (expand-file-name root))))
>> >             (setq-local geiser-guile-binary (concat real-root 
>> > "/.geiser-guile"))
>> >             (setq-local projectile-project-compilation-cmd
>> >                         (concat real-root "/.projectile-compile"))
>> >             (setq-local projectile-project-test-cmd
>> >                         (concat real-root "/.projectile-test")))))))))
>> >
>>
>> It seems to me it'd help everyone if Geiser should handle the above by
>> itself.  It'd be cool to have the above functionality merged into Geiser
>> itelf.  Just saying; thank you for sharing!
>
> With Emacs 28 and new versions of Geiser (such as the one in Guix) I
> highly recommend enabling per-project REPLs.  By setting
> geiser-repl-per-project-p to 't', commands like M-x run-guile and C-c
> C-a will open/switch to a REPL associated with the current project as
> determined by project.el.  This is useful for when you are working on
> multiple projects at once as it makes it harder to mix up REPLs, but
> Geiser also automatically inserts the project root directory into
> Guile's load path.

Thanks, that's very useful information!  It seems like we could simplify
our Geiser auto-configuration snippet in Guix's .dir-locals.el by making
use of this new Geiser feature.

Maxim