create_user() {
    getent group atheme &>/dev/null \
        || groupadd -g 142 atheme

    getent passwd atheme &>/dev/null \
        || useradd  atheme -u 142 -g 142 \
            -d /var/lib/atheme -s /bin/false
}

post_install() {
    create_user
}

post_upgrade() {
    create_user
}

post_remove() {
    getent passwd atheme &>/dev/null && userdel atheme
}