Overriding xkeyboard-config package used by xorg-wrapper

Overriding xkeyboard-config package used by xorg-wrapper

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Hi!

I'm trying to override xkeyboard-config with a fork. I've successfully 
defined a variant in my system configuration along with variants for 
setxkbmap, xkbcomp and xorg-server that use it as input. They all build 
fine and seem to run fine too, but the problem is some things break 
unless the new XKB location is set directly in `X`'s `-xkbdir` argument.

I thought it would automatically get set to the correct location if I 
used my xorg-server variant in my slim service's xorg-configuration, but 
that wasn't the case. I looked at gnu/services/xorg.scm and it seems 
like`xorg-wrapper` just uses the default xkeyboard-config for `-xkbdir`.

Is there a way I can make it use the input from the server package I set 
in xorg-configuration instead? Or is there at least any way I can 
directly override the xkeyboard-config package used by xorg-wrapper?

Thanks :)

SeerLite