{ ... }:
{
  config.dendritic.features.ntp-chrony = {
    nixosModules = [
      (
        { ... }:
        {
          services.chrony = {
            enable = true;
            enableNTS = true;
            servers = [
              "time.cloudflare.com iburst nts"
              "ntppool1.time.nl iburst nts"
              "nts.netnod.se iburst nts"
              "ptbtime1.ptb.de iburst nts"
              "time.dfm.dk iburst nts"
              "time.cifelli.xyz iburst nts"
            ];
            # havent worked out the kinks yet
            #  extraConfig = ''
            #      minsources 3
            #      authselectmode require

            #      # EF
            #      dscp 46

            #      driftfile /var/lib/chrony/drift
            #      dumpdir /var/lib/chrony
            #      ntsdumpdir /var/lib/chrony

            #      leapseclist /usr/share/zoneinfo/leap-seconds.list
            #      makestep 1.0 3

            #      rtconutc

            #      cmdport 0

            #      noclientlog
            #  '';
          };
        }
      )
    ];
  };
}