mavproxy, mavlink, python-pymavlink are failing (python-future and lib2to3 related)

[pieniacy]

Probably all of the packages that depend on python-future are failing on python 3.13. This definitely affects mavproxy, mavlink, python-pymavlink from this repo.

Related:

• Pinned comment on python-future
• lib2to3 discussion

Workaround

For those looking for a workaround using python312 with a local venv:

pacaur -S python312
python3.12 -m venv venv
. venv/bin/activate
pip install MAVProxy wxpython matplotlib

This lets me use MAVExplorer.py and mavproxy.py

[jpkotta]

I've made a PR for mavproxy.py, the fix is just using the latest version of mavproxy.

#283