MarsSeed [1] filed a deletion request for gr-fosphor [2]: Abandoned, broken package from 2019.
Users should use the maintained gr-fosphor-git package. [a] Upstream does not create release tags. [b] [a]: https://aur.archlinux.org/packages/gr-fosphor-git [b]: https://gitea.osmocom.org/sdr/gr-fosphor.git [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/gr-fosphor/
