{
  nix = {
    settings = {
      substituters = [
        "https://hsndev.cachix.org"
      ];
      trusted-public-keys = [
        "hsndev.cachix.org-1:vN1/XGBZtMLnTFYDmTLDrullgZHSUYY3Kqt+Yg/C+tE="
      ];
    };
  };
}