Comment by oever

On NixOS, I think the release time or commit time is used:

    $ python3
    Python 3.10.11 (main, Apr  4 2023, 22:10:32) [GCC 12.2.0] on linux
    Type "help", "copyright", "credits" or "license" for more information.
    >>> 

That is more useful than the build time.