The hype around pipenv is gone now that more people actually tried to use it in real life project and foubd out that it was not the storytelled solution to all your problems
Sure, but I still don't get why it is missing from the project list. The list is not that curated. It includes Autoenv for example, a project whose Github README [0] says,
"Note: you should probably use direnv instead. Simply put, it is higher quality software. But, autoenv is still great, too. Maybe try both? :)"
https://www.kennethreitz.org/projects
What that means, I don't know.