bug#35322: AM_PATH_PYTHON incompatible with Python frameworks on macOS

[Karl Berry]

    I wonder if it might also make sense to offer a configure option to set 
    PYTHON_PREFIX?

I think that would be great (--pythondir, --pythonexecdir or some
such). Would you mind looking into that? I've never played around with
the options Automake adds and have unfortunately limited time to
research the code. But I will eventually if needed.

    I'd certainly appreciate input from other packagers as well.

Indeed yes. --thanks, karl.