BubuIIC [1] filed a deletion request for python2-user-agents [2]: Python2 version doesn't build anymore needs also outdated python2-ua- parser which needs unpackaged python2 libs to update.
[1] https://aur.archlinux.org/account/BubuIIC/ [2] https://aur.archlinux.org/pkgbase/python2-user-agents/
