nixos-configs/devices/servivi/modules/minecraft.nix

{
  config,
  nms,
  pkgs,
  ...
}: {
  imports = [nms.nixosModules.default];

  services.modded-minecraft-servers = {
    eula = true;
    user = config.vars.user;
    group = "users";

    instances = let
      jre8 = pkgs.temurin-bin-8;
      jre17 = pkgs.temurin-bin-17;

      defaults = {
        spawn-protection = 0;
        max-tick-time = 5 * 60 * 1000;
        allow-flight = true;
      };
    in {
      # Vanilla Survival
      sv = {
        enable = false;

        serverConfig =
          {
            server-port = 25566;

            extra-options = {
            };
          }
          // defaults;
      };

      # Vanilla Creative
      cv = {
        enable = true;

        jvmMaxAllocation = "6G";
        jvmInitialAllocation = "2G";
        jvmPackage = jre17;
        jvmOpts = "";

        serverConfig =
          {
            server-port = 25569;
            motd = "creative mode gaming";

            extra-options = {
              difficulty = "hard";
              enable-command-block = true;
              enforce-whitelist = true;
              gamemode = "creative";
              max-players = 6;
              view-distance = 16;
            };
          }
          // defaults;
      };

      # Modded https://www.curseforge.com/minecraft/modpacks/nomi-ceu
      nomi = {
        enable = true;

        jvmMaxAllocation = "10G";
        jvmInitialAllocation = "2G";
        jvmPackage = jre8;
        jvmOpts = "";

        serverConfig =
          {
            server-port = 25560;
            motd = "motd=Nomi CEu Server, v1.7-alpha-2";

            extra-options = {
              max-players = 8;
              difficulty = 1;
              view-distance = 10;
              simulation-distance = 10;
              level-type = "lostcities";
            };
          }
          // defaults;
      };
    };
  };
}