{...}: {
  config.flake.modules.homeManager.encryption = {
    lib,
    config,
    pkgs,
    ...
  }: {
    options.azos.encryption.enable = lib.mkOption {
      default = true;
      type = lib.types.bool;
    };
    config = lib.mkIf config.azos.encryption.enable {
      programs.password-store = {
        enable = true;
        settings = {
          PASSWORD_STORE_KEY = "26B851F81F8F7C55";
        };
      };
      home.packages = with pkgs; [
        yubikey-personalization
      ];
      programs.gpg = {
        enable = true;
      };
      programs.browserpass = {
        enable = true;
        browsers = ["chromium"];
      };
      services.gpg-agent = {
        enable = true;
        enableSshSupport = true;
        grabKeyboardAndMouse = false;
        pinentry.package = pkgs.pinentry-emacs;
        extraConfig = ''
          allow-emacs-pinentry
          allow-loopback-pinentry
        '';
      };

      # pinentry-emacs only attempts its Emacs-loopback socket when ITS OWN
      # process env has INSIDE_EMACS set (see pinentry-emacs.c) -- and that
      # process is gpg-agent's child, so it inherits gpg-agent's daemon env,
      # not the env of whichever client (git, pass, ...) asked it to sign.
      # Without this, any signing request from outside Emacs (e.g. a plain
      # terminal, or an agent shelling out to git) always falls through to
      # the curses pinentry, which fails outright when there's no real tty.
      #
      # Only safe to force on when Emacs is structurally guaranteed to be
      # up and responsive -- i.e. under EXWM, where Emacs *is* the window
      # manager. Elsewhere Emacs may not be running (fine: the loopback
      # socket connect fails instantly, same fast fallback as today) or may
      # be running but transiently busy (not fine: pinentry then blocks on
      # the Assuan handshake for up to its 60s timeout before falling back,
      # which is strictly worse than today's instant failure).
      systemd.user.services.gpg-agent.Service.Environment =
        lib.mkIf config.azos.suites.exwm.enable ["INSIDE_EMACS=1"];

      home.file.".ssh/config".source = ./ssh-config;
      home.file.".ssh/gpg-as-ssh.pub".source = ./gpg-as-ssh.pub;
      home.file.".gnupg/sshcontrol".source = ./sshcontrol;

      # home-manager creates ~/.gnupg (via the files above) with the default
      # umask, which can leave it group/other-readable. gpg refuses to trust
      # a homedir like that and prints an "unsafe permissions" warning on
      # every invocation, which pollutes anything that captures gpg/pass
      # output (e.g. shell-command-to-string). Enforce 700 on every switch.
      home.activation.gnupgPerms = lib.hm.dag.entryAfter ["writeBoundary"] ''
        $DRY_RUN_CMD chmod 700 "$HOME/.gnupg"
      '';
    };
  };
}