The problem is, dependency management isn't a solved problem. I was nodding my head in agreement at the part where the author mentions that pyenv compiles Pytho

The problem is, dependency management isn't a solved problem. I was nodding my head in agreement at the part where the author mentions that pyenv compiles Python from source when it installs. If you try to figure out the reason behind this, it becomes obvious that the only one that makes any sense at all is that distributing binaries, in a secure way, is hard for open-source projects to manage. After all, bandwidth costs money, someone has to pay for the build server, someone has to pay for the data transfer bandwidth. And, do you trust that person to not be a rogue actor? It's easier to pull down the source, on the end user's machine, cross your fingers for good luck, and compile it. We also haven't figured out how to incentivize maintaining backward-compatibility. 99.9% of the time when some library updates, and stops working with language version X, it's using some hot new feature of the language. Usually just because the library author thought it would be cool or more elegant. The entire software world needs to update now, because someone left-padded us for elegance.