slouchy [1] filed an orphan request for plasma5-wallpapers-wallpaper- engine-git [2]: Please either add "git submodule update --init" after line "cd "$pkgname"" in build(), or orphan the package. It is not possible to compile it in current state and the request was made few months ago in forum. [1] https://aur.archlinux.org/account/slouchy/ [2] https://aur.archlinux.org/pkgbase/plasma5-wallpapers-wallpaper-engine-git/