Netboot
There is experimentall netboot.xyz support by Lassulus. You can test it by using the Test forked netboot.xyz branch or hash feature.
You can reach it in netboot.xyz the following way:
Utilities -> Test forked netboot.xyz branch or hash
Github username: lassulus
Branch name: nixos
Then you need to disable netboot.xyz signature checks, the menu item is called:
netboot.xyz [ enabled: true ]
afterwards you can find NixOS under Linux installs