nixos-demo/users/root/default.nix

{ ... }:

{
  users = {
    users = {
      root = {
        password = "rootpw";
      };
    };
  };

  home-manager = {
    users = {
      root = {
        imports = [ ./home/default.nix ];
      };
    };
  };

  environment.persistence.persistence = {
    directories = [
      {
        directory = "/root";
        user = "root";
        group = "root";
        mode = "u=rwx,g=,o=";
      }
    ];
  };
}