xorg-server.install

post_upgrade() {
  if (( $(vercmp $2 1.16.0-3) < 0 )); then
    post_install
  fi
}

post_install() {
  cat <<MSG
>>> xorg-server has now the ability to run without root rights. To be
	able to use this features, install the package xorg-server-noroot.
MSG
}