[franey]

I think this is a good basic overview of the dependency management landscape. I have a few things to add.

One is that because Python has been around for so long, it's easy to find outdated or conflicting advice about how to manage Python packages.

I think it's important to stress that pyenv isn't strictly a dependency manager, too, and depending on your OS, isn't necessary. (Supported Python versions are in the AUR[0].)

A lot of pain from Python 2 -> 3 is that many operating systems were so slow to switch their default Python version to 3. Unless something has changed in the last month or so, Mac OS _still_ uses Python 2 as the default.

It's a shame to see Python take a beating for OS-level decisions.

[0] https://aur.archlinux.org/