{
  versions = {
    # Default version of nixpkgs to use
    default = "23.11";

    # Supported nixpkgs versions
    supported = [
      "unstable"
      "23.11"
    ];
  };

  systems = {
    # Default target system
    default = "nixos";

    # Supported target systems
    supported = [
      "nixos"
      "zyxel-nwa50ax"
    ];
  };
}