PyAV failures with python 3.10

[obilodeau]

Current PyAV packages fail with Python 3.10 (which landed in Arch linux a couple of weeks back) with something like:

ImportError: [...]/pyrdp/venv/lib/python3.10/site-packages/av/enum.cpython-310-x86_64-linux-gnu.so: undefined symbol: _PyGen_Send

Already reported upstream and tracked here: PyAV-Org/PyAV#820

Here's the workaround:

• Get in the pyrdp venv
• Run:

pip uninstall av
git clone git@github.com:mikeboers/PyAV.git
cd PyAV/
pip install -r tests/requirements.txt
make
python setup.py install

[obilodeau]

There was movement upstream: PyAV-Org/PyAV#820. I'll see if it passes our tests.

[obilodeau]

Upstream's 8.1.0 release resolves this problem. Closing.

I'm adding Python 3.10 to our CI to catch that earlier in the future. See #387.