MarsSeed [1] filed a deletion request for qgnomeplatform-solarized [2]: Nothing depends on this anymore, and upstream is discontinued since last year in favor of qadwaitadecorations. [a]
There are AUR packages for the latter. [b] [c] [a]: https://github.com/FedoraQt/QGnomePlatform#qgnomeplatform [b]: https://aur.archlinux.org/pkgbase/qadwaitadecorations [c]: https://aur.archlinux.org/pkgbase/qadwaitadecorations-git [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/qgnomeplatform-solarized/
