post_install() {
    getent passwd nslcd >> /dev/null || useradd -r -M -d /var/run/nslcd -s /bin/false nslcd
}

post_upgrade() {
    getent passwd nslcd >> /dev/null || useradd -r -M -s /bin/false nslcd
}

pre_remove() {
    userdel nslcd >/dev/null 2>&1 || true
}