No module named setuptools

[arantius]

When installing:

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Installing mlat-client to virtual environment

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Traceback (most recent call last):
  File "/usr/local/share/adsbexchange/mlat-client-git/setup.py", line 25, in <module>
    from setuptools import setup, Extension
ModuleNotFoundError: No module named 'setuptools'
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Need a pip install setuptools between creation of venv and calling build. On debian trixie mini.

[arantius]

And if I work around that manually, running produces ModuleNotFoundError: No module named 'asyncore'. A pip install pyasyncore makes it run. After both of these changes (and starting the systemd service) https://adsbexchange.com/myip/ shows MLAT connected.