{
  config,
  lib,
  pkgs,
  ...
}:

let
  # shellCommand = cmd: (lib.concatMapStringsSep " " lib.strings.escapeShellArg cmd);
  shellCommand = cmd: (builtins.concatStringsSep " " cmd);
in
{
  imports = [ ];

  options.me = {
    kube_scheduler.enable = lib.mkOption {
      type = lib.types.bool;
      default = false;
      example = true;
      description = "Whether we want to install kube_scheduler.";
    };
  };

  config = lib.mkIf config.me.kube_scheduler.enable {
    systemd.services.kube-scheduler = {
      enable = true;
      description = "Kubernetes Scheduler";
      documentation = [ "https://github.com/kubernetes/kubernetes" ];
      wantedBy = [ "kubernetes.target" ];
      after = [ "kube-apiserver.service" ];
      # path = with pkgs; [
      #   zfs
      # ];
      unitConfig.DefaultDependencies = "no";
      serviceConfig = {
        ExecStart = (
          shellCommand [
            # NEW:
            "${pkgs.kubernetes}/bin/kube-scheduler"
            "--config=${./files/kube-scheduler.yaml}"
            "--v=2"
          ]
        );
        Restart = "on-failure";
        RestartSec = 5;
        LimitNOFILE = 65536;
        User = "kubernetes";
      };
    };

    networking.firewall.allowedTCPPorts = [
      10259
    ];
  };
}