Comment 0 for bug 1893162

Downloading the source and attempting to run the tests is throwing errors on various combinations of Ubuntu releases.

The bundled README.md/HACKING files seem to pre-date the Makefile/tox setup, so should probably be:

1. Brought up to date, and
2. Improved to list exactly what's expected/required in order for the tests to pass in, say, a freshly installed container or VM for a given (supported) series