MarsSeed [1] filed a deletion request for emspring [2]: Broken scientific application from 2017, based on Python2, OpenGL, qt4-webkit and Java. Upstream and source missing: host unreachable. PKGBUILD also uses wget to fetch an undeclared source script, and executes python2-pip for installation. Nothing depends on this defunct package; I recommend deletion. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/emspring/