Hi, Thanks Jelmer!
Others - This is just to confirm that I can reproduce the issue on a Pi4 (with no pending updates) and that I was able to move forward with jelmer's workaround. pi@raspberrypi:~/proj/pgx-extns/test2 $ uname -a Linux raspberrypi 5.10.63-v7l+ #1496 SMP Wed Dec 1 15:58:56 GMT 2021 armv7l GNU/Linux pi@raspberrypi:~/proj/pgx-extns/test2 $ ldconfig -v 2>/dev/null | grep libgit2 libgit2.so.27 -> libgit2.so.0.27.7 - robins