{
  pkgs,
  config,
  ...
}: let
  #myEmacs = pkgs.callPackage ../../configs/emacs.nix { };
  pubKeys = [
    "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIO7v+/xS8832iMqJHCWsxUZ8zYoMWoZhjj++e26g1fLT europa"
  ];
in {
  _module.args.isUnstable = false;
  imports = [
    ./hardware-configuration.nix
    ../../modules/rtlamr2mqtt.nix
  ];

  hardware.rtl-sdr.enable = true;

  # Bootloader.
  boot.loader.systemd-boot.enable = true;
  boot.loader.efi.canTouchEfiVariables = true;
  boot.loader.efi.efiSysMountPoint = "/boot/efi";
  boot.kernelPackages = pkgs.linuxPackages_latest;

  boot.binfmt.emulatedSystems = ["aarch64-linux" "riscv64-linux"];
  nixpkgs.config.allowUnsupportedSystem = true;

  networking = {
    hostName = "pwntie";
    networkmanager.enable = true;
    firewall = {
      enable = true;
      allowedTCPPorts = [22];
      checkReversePath = "loose";
    };
  };

  virtualisation.libvirtd.enable = true;

  environment.sessionVariables = {
    XDG_BIN_HOME = "\${HOME}/.local/bin";
    XDG_CACHE_HOME = "\${HOME}/.cache";
    XDG_CONFIG_HOME = "\${HOME}/.config";
    XDG_DATA_HOME = "\${HOME}/.local/share";

    STEAM_EXTRA_COMPAT_TOOLS_PATHS = "\${HOME}/.steam/root/compatibilitytools.d";
    PATH = ["\${XDG_BIN_HOME}"];
  };

  users.users.qbit.extraGroups = ["dialout" "libvirtd" "docker" "plugdev"];

  #nixpkgs.config.allowUnfree = true;
  environment.systemPackages = with pkgs; [
    rtl-sdr
    direwolf
    (callPackage ../../pkgs/rtlamr.nix {})
  ];

  #programs = {
  #  steam.enable = true;
  #  _1password.enable = true;
  #  _1password-gui = {
  #    enable = true;
  #    polkitPolicyOwners = [ "qbit" ];
  #  };
  #  dconf.enable = true;
  #};

  xinCI = {
    user = "qbit";
    enable = true;
  };

  services = {
    rtlamr2mqtt = {
      enable = true;
      configuration = {
        general = {
          device_ids_path = "${config.services.rtlamr2mqtt.package}/sdl_ids.txt";
          sleep_for = 0;
          verbosity = "debug";
          tickle_rtl_tcp = false;
          device_id = "0bda:2838";
        };
        mqtt = {
          host = "10.6.0.15";
          port = 1883;
          tls_enabled = false;
          ha_autodiscovery = true;
          base_topec = "rtlamr";
        };
        custom_parameters = {
          rtltcp = "-s 2048000";
          rtlamr = "-unique=true -symbollength=32";
        };
        meters = [
          {
            id = 48582066;
            protocol = "scm";
            name = "gas_meter";
            unit_of_measurement = "ft³";
            icon = "mdi:gas-burner";
            device_class = "gas";
            state_class = "total_increasing";
          }
        ];
      };
    };
    #emacs = {
    #  enable = true;
    #  package = myEmacs;
    #  install = true;
    #};
    fwupd = {
      enable = true;
      enableTestRemote = true;
    };
  };

  users.users.root = {openssh.authorizedKeys.keys = pubKeys;};
  users.users.qbit = {openssh.authorizedKeys.keys = pubKeys;};

  system.stateVersion = "22.11";
}