{ inputs, config, ... }:
let
  config' = config;
in
{
  flake.nixngConfigurations.getmail = inputs.nixng.nglib.makeSystem {
    system = "x86_64-linux";
    name = "ra-systems-getmail";
    inherit (inputs)
      nixpkgs;
    config =
      { pkgs, config, ... }:
      {
        config = {
          dumb-init = {
            enable = true;
            type.services = {};
          };

          users.users."vmail" = {
            uid = config.ids.uids.vmail;
            description = "vmail user.";
            group = "vmail";
            shell = "${pkgs.bash}/bin/bash";
          };
          users.groups."vmail" = {
            gid = config.ids.gids.vmail;
          };

          init.services.getmail = {
            shutdownOnExit = true;
            script =
              let
                pkgs' = pkgs.appendOverlays (with config'.flake.overlays; [
                  courier-unicode
                  getmail6
                  maildrop
                ]);
                PATH = with pkgs'; lib.makeBinPath [
                  jq
                  busybox
                  runit
                  bash
                  getmail6
                  maildrop
                ];
              in
                pkgs.writeShellScript "getmail-run" ''
                  export PATH=${PATH}:${pkgs.opensmtpd}/libexec/opensmtpd:$PATH

                  set -m

                  for rcfile in /mail-configuration/getmail.d/*.rc
                  do
                    filename="$(basename "''${rcfile}")"
                    email="''${filename%".rc"}"

                    mkdir -p "/getmail.d/''${email}"
                    chown vmail:vmail -R "/getmail.d/''${email}"

                    (
                      while true
                      do
                        chpst -u vmail:vmail getmail -i INBOX -n -r "$rcfile" --getmaildir "/mail-configuration/getmail.d/''${email}"
                        sleep 10
                      done
                    ) &
                  done

                  wait
                '';
            enabled = true;
          };
        };
      };
  };
}

  # /usr/lib/sendmail -i -oem -f %F %T