The original author and maintainer of gr-osmosdr (Dimitri horiz0n Stolnikov) has lost time and/or interest in maintaining gr-osmosdr. That's very sad, but it is a fact that people have a limited amount of time, and priorities change. We'd like to thank Dimitri and all other gr-osmosdr developers/contributors for what they have done so far.
We're publicly calling for some other community member[s] to step up and become maintainer[s] of gr-osmosdr.
Who is interested in gr-osmosdr and willing to maintain it, possibly in a team with other interested folks?
The original related mailing list post can be found at http://lists.osmocom.org/pipermail/osmocom-sdr/2019-September/001983.html - it is best to follow-up there in case you are interested and/or have comments.