{
  pkgs,
  config,
  lib,
  ...
}:
let
  inherit (config.grimmShared)
    enable
    tooling
    network
    ;
  inherit (lib)
    mkIf
    ;

  created = "1970-01-01T00:00:00.0+00:00";
in
{
  config = mkIf (enable && tooling.enable && network) {
    services.opensnitch.rules = {

      systemd-timesyncd = mkIf (config.services.timesyncd.enable) {
        name = "systemd-timesyncd";
        enabled = true;
        action = "allow";
        duration = "always";
        inherit created;
        operator = {
          type = "list";
          operand = "list";
          list = [
            {
              type = "simple";
              sensitive = false;
              operand = "process.path";
              data = "${lib.getBin pkgs.systemd}/lib/systemd/systemd-timesyncd";
            }
            {
              type = "regexp";
              operand = "dest.port";
              data = "123|37";
            }
            #              {
            #                type = "regexp";
            #                sensitive = false;
            #                operand = "dest.host";
            #                data = ".*\.nixos\.pool\.ntp\.org";
            #              }
            {
              type = "simple";
              operand = "user.id";
              data = "154";
            }
          ];
        };
      };
    };
  };
}