[vetinari]

> What I expect it also means is that you'll get inconsistencies when doing inter-process communication, since they'll be using different libraries with potential mismatches.

While this is true, I've never seen this to be a problem. If two programs use IPC, they usually use either stable, or compatible protocol.

To make things even more complicated, you can have two programs, either each in it's own container, or statically linked, or with their private bundles of libraries, doing IPC and then they are free to have different versions of the underlying libraries, while the users still expect them to work fine.