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{
  config,
  lib,
  ...
}:
with lib; let
  cfg = config.nixfiles.modules.gnupg;
in {
  options.nixfiles.modules.gnupg.enable = mkEnableOption "GnuPG";

  config = mkIf cfg.enable {
    hm.programs.gpg = {
      enable = true;

      settings =
        {
          display-charset = "utf-8";
          enable-progress-filter = true;
          fixed-list-mode = true;
          keyid-format = "0xlong";
          no-comments = true;
          no-emit-version = true;
          no-greeting = true;
          with-fingerprint = true;
          throw-keyids = false;

          use-agent = true;

          armor = true;

          no-random-seed-file = true;

          list-options = "show-uid-validity";
          verify-options = "show-uid-validity";
        }
        // (let
          cipherAlgos = ["AES256" "AES192" "AES"];
          digestAlgos = ["SHA512" "SHA384" "SHA256" "SHA224"];
          compressionAlgos = ["ZLIB" "BZIP2" "ZIP" "Uncompressed"];

          cs = concatStringsSep " ";
        in {
          default-preference-list =
            cs (cipherAlgos ++ digestAlgos ++ compressionAlgos);

          personal-cipher-preferences = cs cipherAlgos;
          personal-digest-preferences = cs digestAlgos;
          personal-compress-preferences = cs compressionAlgos;

          s2k-cipher-algo = head cipherAlgos;
          s2k-digest-algo = head digestAlgos;

          digest-algo = head digestAlgos;
          cert-digest-algo = head digestAlgos;
        });
    };
  };
}