version=3
opts=uversionmangle=s/(\d)[\.\-]?((?:rc|RC|pre)\.?\d+(?:-\d+)?)$/$1~$2/;s/^((?:\d+\.)*\d+)([ab]\d*)$/$1~$2/ \
https://github.com/surfly/gevent/tags \
.*/archive/(?:upstream/)?(?:v||version-|release-|X|R)(\d\S*)\.tar\.gz
