post_upgrade() {
  if findmnt --fstab -uno SOURCE /boot &>/dev/null && ! mountpoint -q /boot; then
    echo "WARNING: /boot appears to be a separate partition but is not mounted."
  fi
  if (( $(vercmp $2 5.5.8-3) < 0 )); then
    echo    '==> Fallback initramfs is not used, so it is being deleted now.'
    echo -n '==> Please DO merge your mkinitcpio preset'
    echo    ' if you have it changed before,'
    echo    '==> otherwise your device will not boot again.'
    rm -f boot/initramfs-linux-phicomm-n1-fallback.img
  fi
}

post_remove() {
  rm -f boot/initramfs-linux-phicomm-n1.img
}