{ 
  services.vdirsyncer = {
    enable = false;

    jobs.calendar = {
      enable = true;
      user = "builder";
      group = "users";
      forceDiscover = true;
      config = {
        pairs = {
          my_calendar = {
            "a" = "calendar_local";
            "b" = "calendar_remote";
            "collections" = [ "from a" "from b" ];
          };
        };

        storages = {
          calendar_local = {
            type = "filesystem";
            path = "/home/builder/.calendars/";
            fileext = ".ics";
          };

          calendar_remote = {
            type = "caldav";
            url = "https://cal.0ff.space/calendar/public/";
            username = "calendar";
            password = "changeme";
          };
        };
      };
    };
  };
}

# sync .ics files