url=$(dirname $url)
url=$url/$(fetch $url \
| grep -Eo v[0-9.]+/ \
| sort -V \
| tail -n1)

filename=node

port_getver() {
	fetch \
	| grep -Eo $filename-v[0-9.]+.tar.[bgx]z2? \
	| sed "s/$filename-v//;s/\.tar.*//"
}