MarsSeed [1] filed a deletion request for python2-bunch [2]: A dependency from 2015 of the unused Py2 library python2-python- jsonrpc. I recommend to to delete this package, as well as the latter (PRQ#44090).
[1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/python2-bunch/
