nixos.server/modules/hosts/server02/server02Configuration.nix

{...}: {
  flake.nixosModules.server02Configuration = {pkgs, ...}: {
    networking = {
      hostName = "server02";
    };
    environment.systemPackages = with pkgs; [
      hugo
    ];
    swapDevices = [
      {
        device = "/swapfile";
        size = 16 * 1024;
      }
    ];
  };
}