_feedbackd() {

  # Make sure the `feedbackd` group exists
  if ! getent group feedbackd >/dev/null; then
    groupadd --system feedbackd
  fi

  # Make sure the default user belongs to the `feedbackd` group so it can
  # trigger LED feedback
  MAIN_USER=$(id -nu 1000);
  if ! groups "${MAIN_USER}" | grep -q feedbackd; then
    usermod -aG feedbackd "${MAIN_USER}"
  fi
}

post_install() {
  _feedbackd
}

post_upgrade() {
  _feedbackd
}
