post_upgrade() {
	if [ $(vercmp $2 '2.0.0.r169.edead0c-1') -le 0 ]
	then
	    cat<<'EOF'
## NOTE ##
Due to a bug this package no longer provides support for using vaapi via X11.
Apps configured to use vaapi in this way (e.g. VLC, MPV) should be changed to
use vaapi via DRM.

EOF
    fi
}