niksos/modules/other/system.nix

{
    config,
    lib,
    ...
}: let
    cfg = config.myOptions.other.system;

    inherit (lib.options) mkOption;
    inherit (lib.types) str;
in {
    options.myOptions.other.system = {
        hostname = mkOption {
            description = "hostname for this system";
            type = str;
        };

        username = mkOption {
            description = "username for this system (doesn't support multi user yet)";
            type = str;
        };

        platform = mkOption {
            description = "system (the one you usually passed to nixosSystem)";
            type = str;
        };
    };

    config = {
        networking.hostName = cfg.hostname;

        users.users.${cfg.username} = {
            isNormalUser = true;
            extraGroups = [ "wheel" ];
        };

        nixpkgs.hostPlatform = cfg.platform;
    };
}