post_install() {
    echo ':: Enable the background service with: systemctl enable --now once-background.service'
}

post_upgrade() {
    if systemctl is-active --quiet once-background.service; then
        systemctl restart once-background.service
    fi
}

pre_remove() {
    if systemctl is-active --quiet once-background.service; then
        systemctl disable --now once-background.service
    fi
}