polyzen [1] filed a deletion request for python2-oauth2client1412 [2]:

Super outdated versioned dep needed only by an outdated fork with just 1 commit and no longer by the upstream package it was made for.

[1] https://aur.archlinux.org/account/polyzen/ [2] https://aur.archlinux.org/pkgbase/python2-oauth2client1412/