post_install() {
  if ! getent passwd nm-openvpn >/dev/null; then
    useradd -r -U -d / -c 'NetworkManager OpenVPN' -s /usr/sbin/nologin nm-openvpn
  fi
}

post_upgrade() {
  post_install $1
}

post_remove() {
  post_install $1
}