I based on https://aur.archlinux.org/packages/pipewire-openrc to further advanced the scripts so that pipewire can be handled by my gnome-session by openrc. I just publish the code and am not going to support it with diligence. But everyone is free to fork and further advance it.
https://github.com/shuryanc/Pipewire-openrc-for-artix/tree/main