Maybe using a custom Xorg configuration service helps. Add to the services field:
(set-xorg-configuration
(xorg-configuration
(modules
(list
xf86-video-fbdev
xf86-input-libinput))))
(or another xf86-video- driver depending on your GPU).
This would leave out evdev and other obsolete input drivers drivers.
Maybe this makes the wacom tablet work. In case this actually helps,
bug <https://issues.guix.gnu.org/issue/35450> would need to be fixed.
Regards,
Florian
