This is exactly the thing I'm talking about. Because python allows everyone to install everything into some virtual environment, everyone just grabs the latest

This is exactly the thing I'm talking about. Because python allows everyone to install everything into some virtual environment, everyone just grabs the latest version available and puts it into their requirements.txt without checking if that version is even required and never updating that version again. They then say they need virtualenvs to solve that problem. The funny thing is the same people who do this then turn around and complain about some instability because some c library changed their API after 10 years.