post_upgrade() {
cat << EOF

Before starting Jackal, the database needs to be initialized.
The schema files can be found in /usr/share/jackal/ and instructions can be
found in /usr/share/doc/jackal.

After configuring the database, restart jackal.service.
EOF
}

post_install() {
  install -dm 750 /var/lib/jackal/
  sed -i "s/dialback_secret: .*/dialback_secret: $(< /dev/urandom tr -dc _A-Z-a-z-0-9 | head -c64)/g" /etc/jackal/jackal.yml
}