Checking the last two pull requests (#30 and#28), we can verify that the GitHub action related to the CI pipeline is not working as intended. After analyzing the logs (https://github.com/serverlessworkflow/sdk-python/actions/runs/15737597450/job/44355216261?pr=28), it seems that the action is using both Python 3.9 and 3.12 versions simultaneously. It seems that Python 3.9 is being used inside the virtual environment and 3.12 outside.

Moreover, there is also an issue with setuptools, not only in this action, but also when a user tries to install this SDK locally. The error is:

[...]File "[...].local/share/virtualenvs/sdk-python--VDpkmjP/lib/python3.9/site-packages/setuptools/_core_metadata.py", line 293, in _distribution_fullname    canonicalize_version(version, strip_trailing_zero=False),TypeError: canonicalize_version() got an unexpected keyword argument 'strip_trailing_zero'

Apparently, this happens for setuptools>=71 (pypa/setuptools#4483)