post_install() {
  udevadm hwdb --update
}
post_upgrade() {
  if [ "$(vercmp $2 2.4.13)" -lt 0 ]; then
    groupdel camera &>/dev/null
    echo "Users no longer need to be in the 'camera' group to use camera devices"
  fi
  post_install
}

post_remove() {
  post_install
}