What you need is for the package repositories to have a separate, easily-used instance for testing and experimentation. Unfortunately, most don’t do this. I kn

What you need is for the package repositories to have a separate, easily-used instance for testing and experimentation. Unfortunately, most don’t do this. I know of one: Python has TestPyPI at https://test.pypi.org/ https://test.pypi.org/, and the packaging tutorial has you use it: https://packaging.python.org/en/latest/tutorials/packaging-projects/#uploading-the-distribution-archives https://packaging.python.org/en/latest/tutorials/packaging-p....