Support Python 3.12

[douglas-raillard-arm]

Distutils module has now been removed from Python 3.12 (to be released in 2023), so wa needs to stop using it.

We also need to remove uses of "imp" module that has also been removed.

https://peps.python.org/pep-0632/#migration-advice

[Ablu]

While direct dependencies to imp seem to be gone since 77ebefb, there still seem to be indirect dependencies through future:

  File "/home/ablu/projects/lisa/lisa/wa/__init__.py", line 30, in <module>
    from wa import discover_wa_outputs, Status
  File "/home/ablu/projects/lisa/external/workload-automation/wa/__init__.py", line 27, in <module>
    from wa.framework.output import RunOutput, discover_wa_outputs
  File "/home/ablu/projects/lisa/external/workload-automation/wa/framework/output.py", line 36, in <module>
    from wa.framework.configuration.execution import CombinedConfig
  File "/home/ablu/projects/lisa/external/workload-automation/wa/framework/configuration/execution.py", line 19, in <module>
    from future.moves.itertools import zip_longest
  File "/home/ablu/projects/lisa/.lisa-venv-3.12/lib64/python3.12/site-packages/future/moves/__init__.py", line 5, in <module>
    from future.standard_library import import_top_level_modules
  File "/home/ablu/projects/lisa/.lisa-venv-3.12/lib64/python3.12/site-packages/future/standard_library/__init__.py", line 65, in <module>
    import imp
ModuleNotFoundError: No module named 'imp'

Patches are posted in various PRs: https://github.com/PythonCharmers/python-future/pulls. However it looks like future is unmaintained.

[douglas-raillard-arm]

@marcbonnici Looks like we will need to remove dependency on "future" as well then (I think it provides the "past" module we use)

[douglas-raillard-arm]

Ubuntu 24.04 LTS will have Python 3.12 shipped by default: https://packages.ubuntu.com/noble/python3

[douglas-raillard-arm]

"future" seems to now support Python 3.12, and wa --help runs fine on Python 3.12. Once users confirmed that 3.12 is properly supported, we can close that ticket. It would still be a good idea to stop depending on "future" though, as we can surely do without and so it does not hold us back at each Python release.