This is the nixos-hardware module of the T2 Linux Project.
Overall, most features (WiFi, bluetooth, audio, touchbar, ...) of Macs are supported, see this page for a detailed list of things that work and things that don't/partially work.
Following this guide is the recommended way to install, as it incudes the extra things you have to do on a T2 Mac.
You can consult the wiki for information specific to T2 Macs.