[bug#40601] [guix-daemon now working on parabola with openrc]

[jgart]

I have openrc working on parabola with guix-daemon. It successfully registers 
the following service.

#! /sbin/openrc-run

description="guix build daemon" 
command="/var/guix/profiles/per-user/root/current-guix/bin/guix-daemon" 
command_args="--build-users-group=guixbuild" 
command_background=true
pidfile="/run/guix-daemon.pid"

The above is a modification of Vincent's code in order to make it run for me 
without using the @localstatedir@ variable.

If anybody has suggestions, corrections, and incites about this it would be 
greatly appreciated.

I would like to get this working with the packaged version of guix in parabola 
https://www.parabola.nu/packages/?q=guix

since that PKGBUILD does not support openrc currently.

It also needs to be updated.