version=4
 opts="dversionmangle=s/\+dfsg//,filenamemangle=s%(?:.*?)?v?(\d[\d.]*)\.tar\.gz%basemap-$1.tar.gz%,repacksuffix=+dfsg" \
 https://github.com/matplotlib/basemap/tags (?:.*?/)?v?(\d[\d.]*)\.tar\.gz
