MarsSeed [1] filed a deletion request for gr-osmosdr-nonfree-git [2]: Broken. Abandoned since 2021. Sources cannot be downloaded. Also pkgname is not in alignment with extra repo's gnuradio-osmosdr.
Last comment is from 1+ year ago, reporting build failure. There's still an AUR/gr-osmosdr-git, also abandoned and broken. It can be adopted and fixed (and ideally, renamed) by a new volunteer. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/gr-osmosdr-nonfree-git/
