Afaik it's not finished yet, but there recently has been quite a lot of activity regarding secureboot for nixos https://github.com/nix-community/lanzaboote/ htt

Afaik it's not finished yet, but there recently has been quite a lot of activity regarding secureboot for nixos https://github.com/nix-community/lanzaboote/ https://github.com/nix-community/lanzaboote/