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I've just asked 3 AIs about the way to obtain, using the "uv" command, which is the version of the python runtime that is being used for the active virtual environment. I know I can use "python --version", but I was curious to see whether I could do everything with "uv".

1. Github Copilot (GPT-4.1) told me it was "uv python --version". I told it that a "--version" option didn't exist for "uv python", and that I was using uv version 0.8.17. Its response was that this "--version" option appeared in 0.1.0, so I needed to upgrade to that version 🤷

Interestingly, this explanation included a literal quote from the release notes explaining the reboot, and a link to such release notes where apparently I could verify that point myself. None of that was real. Version 0.8.17 was released five days ago.

2. So I asked Claude (Sonnet 4), and again it told me that I should use "uv python --version" (nope) and also that "uv python list" would give me a list of the installed python versions, indicating the currently active one (also nope on this last point).

I told it that "uv python --version" did not exist, and that I was using uv 0.8.17… and its response clarified that, in fact, the "uv python" subcommand had appeared in uv version 0.9.0, so I needed to upgrade 😕