@Christian Heimes: is there anything else you need from me? Is this the wrong forum?

As discussed in the referenced GitHub issue, some SELinux people suggest it might be a fault in how Python determines (?) it's running within a container environment and how to act upon it.

Does it determine it at all? Does it use libselinux[0]?

Background: I came across this issue by building a Linux distribution using Yocto in a Fedora:30 podman managed container with host volumes bound in. I guess that it is a fairly common scenario in the near future.

[0] https://danwalsh.livejournal.com/73099.html