help() {
  echo "Before using pvgrub, the kernel you want to use needs to be regenerated with Qubes kernel modules in the TemplateVM:"
  echo "1/ Ensure that your kernel and kernel sources are installed (ex: pacman -S linux-lts linux-lts-headers)"
  echo "2/ Ensure that grub config file has been generated for your kernel (ex: grub-mkconfig > /boot/grub/grub.cfg)"
  echo "3/ Run qubes-prepare-vm-kernel helper to compile Qubes-OS kernel modules and rebuild the initcpio"
  echo "   Usage: qubes-prepare-vm-kernel [your kernel version - found in /usr/lib/modules] [your kernel name - ex: 'linux' for vanilla kernel 'linux-lts' for long term support kernel]"
  echo "   Manual generation of initcpio:"
  echo "     dkms install u2mfn/[u2mfn_version - found in /usr/src/] -k [kernel_version] --no-initrd"
  echo "     mkinitcpio -k [kernel_version] -p [kernel_name]"
}

## arg 1:  the new package version
post_install() {
  echo "Adding qubes required hooks to mkinitcpio.conf"
  sed 's/^HOOKS="base/HOOKS="lvm2 qubes base/' -i /etc/mkinitcpio.conf
  help
}

post_upgrade() {
  echo "Adding qubes required hooks to mkinitcpio.conf"
  sed 's/^HOOKS="base/HOOKS="lvm2 qubes base/' -i /etc/mkinitcpio.conf
  help
}

post_remove() {
  echo "Removing qubes required hooks to mkinitcpio.conf"
  sed 's/^HOOKS="lvm2 qubes base/HOOKS="base/' -i /etc/mkinitcpio.conf
}