{
  nix = {
    settings = {
      builders-use-substitutes = true;
    };

    distributedBuilds = true;
    buildMachines = [ {
      hostName = "192.168.2.1";
      systems = [ "x86_64-linux" ];
      protocol = "ssh-ng";
      supportedFeatures = [ "big-parallel" "kvm" "nixos-test" "benchmark" ];
      speedFactor = 100;
      maxJobs = 16;
      sshUser = "nix-remote-build";
      sshKey = "/root/.ssh/id_build_server";
    } ];
  };
}