MarsSeed [1] filed a deletion request for python2-mdp [2]: Abandoned Python 2 package from 2016.
Newer versions of this support Python 3 and can be installed from PyPI. Meanwhile this old package doesn't even build. Recommend deletion. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/python2-mdp/
