post_install() {
    chmod 777 /var/cache/pacman/pkg

    echo 'pacman2pacman notes:'
    echo
    echo '* Note that /var/cache/pacman/pkg has been chmoded 777'
    echo
    echo '* Put the following into /etc/pacman.conf, under the [options] section:'
    echo '  XferCommand = /usr/bin/pacman2pacman-get %u %o'
    echo
    echo '* transmission-daemon needs to be running for pacman2pacman to work:'
    echo '  with systemd:'
    echo '    # systemctl start transmission'
    echo '    # systemctl enable transmission'
    echo '  with OpenRC:'
    echo '    # rc-service transmission-daemon start'
    echo '    # rc-update add transmission-daemon default'
}

post_remove() {
    echo "Don't forget to remove pacman2pacman from pacman.conf's \`XferCommand' setting."
    echo 'Also note that /var/cache/pacman/pkg was chmoded 777 on installation, you might want to change it back.'
}