{ config, lib, pkgs, ...}:
{
  config = {
    environment.systemPackages = [
      pkgs.tailscale
      pkgs.jq
    ];

    systemd.services.tailscaled = {
      enable = true;
      description = "Tailscale node agent";
      after = [ "network-pre.target" ];
      wants = [ "network-pre.target" ];
      serviceConfig = {
        Type = "simple";
        ExecStart = "${pkgs.tailscale}/bin/tailscaled --statedir /var/lib/tailscale";
        Restart = "on-failure";
        RestartSec = 5;
        LiminNOFILE = "infinity";
      };
      wantedBy = [ "multi-user.target" ];
    };
    

    systemd.services.tailscale-autoconnect = {
      enable = false;
      description = "Automatic connection to Tailscale";

      # make sure tailscale is running before trying to connect to tailscale
      after = [ "network-pre.target" "tailscaled.service" ];
      wants = [ "network-pre.target" "tailscaled.service" ];
      wantedBy = [ "multi-user.target" ];

      # set this service as a oneshot job
      serviceConfig.Type = "oneshot";

      # have the job run this shell script
      script = with pkgs; ''
        # wait for tailscaled to settle
        sleep 2

        # check if we are already authenticated to tailscale
        status="$(${pkgs.tailscale}/bin/tailscale status -json | ${pkgs.jq}/bin/jq -r .BackendState)"
        if [ $status = "Running" ]; then # if so, then do nothing
          exit 0
        fi

        # otherwise authenticate with tailscale
        ${pkgs.tailscale}/bin/tailscale up -authkey tskey-examplekeyhere
      '';
    };
  };
}