post_install() {
  cat << _EOF 

==> Installation:
==> Add theme to your /etc/default/grub:
==> GRUB_THEME="/boot/grub/themes/arch-suse/theme.txt"
==> Preferred resolution 1024x768: GRUB_GFXMODE=1024x768
==> Update grub:# grub-mkconfig -o /boot/grub/grub.cfg


_EOF
}

post_upgrade() {
  post_install $1
}