In recent rawproc releases, I’ve packaged the lensfun library compiled from the most recent master commit. It reports itself as 0.3.95, and I haven’t run into any bugs. Last code commit was 21 Nov 2021, but the frequency of commits over the past two years has been slow. However, its working pretty well, IMHO.
It’s been about a month since the last commit to the data, but that could just be holiday recovery… 