Running an external NixOS drive on PC and MacOS: Seeking script advice for configuration.nix

I’ve been using an external NixOS drive on various PCs, notably laptops and desktops alike. I’ve been able to use such drive on Mac devices, but there’s certain components not working correctly: Keyboard and touchbar WiFi Audio I tried creating a specialisation specifically for Intel Mac laptops, and to have the option to still use PCs as I like, but it’s not working out. Does anyone know if this is possible? Or does anyone have a configuration that touches on this? Could I solely do this ...