{ pkgs, lib, config, ... }:
with lib;
let
  notifyScript = ''
    %s -c '[ $SERVICE_RESULT = success ] || echo "Systemd user service %N exited with exit code $EXIT_STATUS, run this command to start finding out why: \'journalctl --user -eu %N.service\'" | xargs intray add'
  '';

in
{

  config.systemd.user.services =
    let serviceNames = lib.attrNames config.systemd.user.services;
    in
      (lib.genAttrs serviceNames
        (serviceName: { Service.ExecStopPost = notifyScript; } ));
}