GNU bug report logs - #71672
[PATCH] python: Prefer python3 over python

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From: Collin Funk <collin.funk1@HIDDEN>
Subject: [PATCH] python: Prefer python3 over python
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Hi,

Shouldn't AM_PATH_PYTHON check for the python3 command before python?
The full recommendation of how these should be setup is in PEP 394
[1].

On modern systems I don't think it should matter. On Fedora 40:

    $ command -v python
    /usr/bin/python
    $ command -v python3
    /usr/bin/python3
    $ python --version
    Python 3.12.3
    $ python3 --version
    Python 3.12.3

The difference mostly exists on older machines. On CentOS 7.9 for
example:

    $ command -v python
    /usr/bin/python
    $ command -v python3
    /usr/bin/python3
    $ python --version
    Python 2.7.5
    $ python3 --version
    Python 3.6.8

I've attached a proposed path. I don't see a situation where a
python3.* is installed without a python3 link. Therefore checking for
python3 and fallingback on python seems reasonable to me.

Collin

[1] https://peps.python.org/pep-0394/
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