read -r -d '' msg <<TIPS
====================================\n
1. Uncomment or add/edit these lines in /etc/libvirt/qemu.conf \n
\n
nvram = [ \n
  "/usr/share/AAVMF/AAVMF_CODE.fd:/usr/share/AAVMF/AAVMF_VARS.fd" \n
  "/usr/share/AAVMF/AAVMF32_CODE.fd:/usr/share/AAVMF/AAVMF32_VARS.fd" \n
]\n

2. systemctl restart libvirtd \n
\n
====================================
TIPS
post_install() {
  echo -e $msg
}

post_upgrade() {
  echo -e $msg
}