In pypropject.toml, the minimal Python version is set to 3.9. However, classifiers are: "Programming Language :: Python :: 3", "Programming Language :: Python :: 3.7 ...

Take control of multiple Python installations in Windows with the py launcher, available as part of a standard Python installation.

I have tried different versions of python too (3.7.4, 3.7.0) but with the same result. I have also tried on a different laptop (with windows 10 too), with the same result. The installation process ...