version=4

https://pypi.python.org/simple/xopen .*/xopen-(\d[\d.]+)@ARCHIVE_EXT@#sha256=.*

# This leads to tarball which does not work
# https://github.com/marcelm/xopen/releases .*/archive/v(\d[\d.-]+)\.(?:tar(?:\.gz|\.bz2)?|tgz)
