post_upgrade() {
	# Only show information if upgrading from 1.253 or older
	if [ $(vercmp $2 1.253-1) -le 0 ]; then
		echo "**************************************************"
		echo "==> Remove obsolete dub package cache files:      "
		echo "    rm -rf ~/.dub/packages/{datefmt-*,gtk-d-*}    "    
		echo "**************************************************"
	fi
}