Use Optimot (variant of Bépo kb layout) with xkblayout tool into guix home ?

[Rey-Coyrehourcq Sébastien]

Hi,

As many french people i try to use Bépo layout on my keyboard ( 
https://en.wikipedia.org/wiki/B%C3%89PO ) to prevent "Repetitive Strain 
Injury".

But if Bépo is great to write text, this is not the case for programming 
or writing english.

I discover that a variant of Bépo dedicated to correct these problems 
exist and work very well on many keyboards layout (ortholinear, hhkb, 
ergo, etc.). This variant of Bépo is named "Optimot" : 
http://forum.bepo.fr/viewtopic.php?id=2049

This very specific layout is not listed in setxkbmap configuration 
options, so i search some way to load this layout from my home config.scm

With help of guix/bépo guys I found a xkb layout generator 
(https://gitlab.freedesktop.org/whot/xkblayout) already packaged into 
guix. This tools is named xkb-layout/xkblayout, developped by Peter 
Hutterer 
(https://who-t.blogspot.com/2020/09/user-specific-xkb-configuration-putting.html 
) and it helps the definition of a user defined xkb layout by using the 
existing xkb integration of the system. So using that i suppose i could 
load an "Optimot" layout for Gnome.

The package is here : /gnu/packages/xdisorg.scm , and more precisely 
here : 
https://git.sjtu.edu.cn/sjtug/guix/-/blob/v1.4.0/gnu/packages/xdisorg.scm?ref_type=tags#L448

How i could link/load the xkb layout generated by xkblayout into my guix 
home "$XDG_CONFIG_HOME/xkb" using the Guix system of keyboard described 
here https://guix.gnu.org/manual/en/html_node/Keyboard-Layout.html ?

is it only possible ? Do you have some pointers on your config to do that ?

Bonus : it's seems that works on wayland.

Best,

Src.