MarsSeed [1] filed a deletion request for qca-qt4 [2]: Fails to build. But no longer needed. KDE4 desktop does not exist anymore in Arch/AUR repos.
Downstream dependency AUR/kvirustotal is also broken due to this and another broken KDE4 lib, but it is submitted for deletion too (PRQ#52534). [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/qca-qt4/
