post_install() {
    getent group yanic >/dev/null || groupadd yanic
    getent passwd yanic >/dev/null || useradd -d /var/lib/yanic -g yanic -r -M -s /bin/false yanic

    mkdir -p /srv/http/meshviewer/data /var/lib/yanic
    chown yanic:yanic /var/lib/yanic /etc/yanic.conf
    chown yanic:http /srv/http/meshviewer/data
    chown http:http /srv/http/meshviewer
}

post_upgrade() {
    systemctl daemon-reload
}