post_install() {
  cat << _EOF

==> Author: 浣衣尘(http://tieba.baidu.com/p/3757812932)
==> Installation:
==> Edit /etc/default/grub: GRUB_THEME="/boot/grub/themes/Vimix/theme.txt"
==> Update grub:# grub-mkconfig -o /boot/grub/grub.cfg

_EOF
}

post_upgrade() {
  post_install $1
}