There's a closed pull request on the void-packages repository

python-msp430-tools: use python3
https://github.com/void-linux/void-packages/pull/42223

Description:
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#### Testing the changes
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The readme mentions that python2 is needed for most modules, but we are slowly removing python2 packages, so I would recommend people to use a python2 venv and pip.

cc @leahneukirchen 
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