post_install() {
  if php -i | grep 'bzip2 compression => disabled' >/dev/null 2>&1; then
    echo -e "Warning: bz2.so must be loaded in your php.ini"
    echo -e "You may use  \"sed -i 's/;extension=bz2.so/extension=bz2.so/g' /etc/php/php.ini\" to change your configuration"
  fi
}

post_upgrade() {
  post_install
}