{
  lib,
  ...
}:

{
  nixpkgs.config.allowUnfreePredicate =
    pkg:
    builtins.elem (lib.getName pkg) [
      "minecraft-server"
    ];
  services.minecraft-servers = {
    enable = true;
    eula = true;
    openFirewall = true;
    servers.vanilla = {
      enable = true;
      jvmOpts = "-Xmx4G -Xms2G";
    };
  };
}