MarsSeed [1] filed a deletion request for qt5-wayland-dev-backport-git [2]:
This unofficial fork has been discontinued since 2018. [a] [a]: https://github.com/johanhelsing/qtwayland-backports [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/qt5-wayland-dev-backport-git/
