{
  nix = {
    binaryCaches = [
      "https://rpi4.cachix.org"
    ];
    binaryCachePublicKeys = [
      "rpi4.cachix.org-1:fMaYBuIlj/Sa9YTXnXMXoXnVZEoVhnFxOkxseKKlku8="
    ];
  };
}