So this isn’t great: $ nix-env -i python3 installing 'python3-3.10.0a5' Why isn’t this great? Well, because in the Python versioning scheme, python3-3.10.0a5 is short for “Python 3.10.0 alpha version 5.” The latest stable release of the Python reference implementation, right now, is actually 3.9.5. 3.10 is currently considered the “pre” branch, and 3.11 is currently the “dev” branch. I think; I’m not really a Python person. So it’s not great that a new Nix user might try t...