post_install() {
  for k in $(cd /lib/modules && /bin/ls); do
    [ -d "/lib/modules/$k/kernel/" ] && depmod -a "$k"
  done
}

post_upgrade() {
  for k in $(cd /lib/modules && /bin/ls); do
    [ -d "/lib/modules/$k/kernel/" ] && depmod -a "$k"
  done
}

## arg 1:  the old package version
post_remove() {
  for k in $(cd /lib/modules && /bin/ls | grep '^[0-9]'); do
    [ -d "/lib/modules/$k/kernel/" ] && depmod -a "$k"
  done

}