{
  config,
  lib,
  pkgs,
  ...
}:
let
  cfg = config.nixfiles.modules.gnupg;
in
{
  options.nixfiles.modules.gnupg = {
    enable = lib.mkEnableOption "GnuPG";
    pinentry = lib.mkOption {
      description = "Name of a pinentry implementation.";
      type = lib.types.package;
      default = pkgs.pinentry-curses;
    };
  };

  config = lib.mkIf cfg.enable {
    hm = {
      programs.gpg = {
        enable = true;
        homedir = "${config.dirs.data}/gnupg";
        settings = {
          armor = true;
          keyid-format = "long";
          no-greeting = true;
          no-random-seed-file = true;
          with-fingerprint = false;
          with-keygrip = false;
        };
      };

      services.gpg-agent = {
        enable = true;
        pinentryPackage = cfg.pinentry;
      };
    };
  };
}