linux-kernel - Re: [PATCH] kbuild: remove PYTHON variable

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Message-ID: <87r1lzvj3q.fsf@meer.lwn.net>
Date:   Mon, 01 Feb 2021 09:38:33 -0700
From:   Jonathan Corbet <corbet@....net>
To:     Masahiro Yamada <masahiroy@...nel.org>,
        linux-kbuild@...r.kernel.org
Cc:     linux-doc@...r.kernel.org, Masahiro Yamada <masahiroy@...nel.org>,
        Fenghua Yu <fenghua.yu@...el.com>,
        Michal Marek <michal.lkml@...kovi.net>,
        Tony Luck <tony.luck@...el.com>, linux-ia64@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org
Subject: Re: [PATCH] kbuild: remove PYTHON variable

Masahiro Yamada <masahiroy@...nel.org> writes:

> Python retired in 2020, and some distributions do not provide the
> 'python' command any more.
>
> As in commit 51839e29cb59 ("scripts: switch explicitly to Python 3"),
> we need to use more specific 'python3' to invoke scripts even if they
> are written in a way compatible with both Python 2 and 3.
>
> This commit removes the variable 'PYTHON', and switches the existing
> users to 'PYTHON3'.
>
> BTW, PEP 394 (https://www.python.org/dev/peps/pep-0394/) is a helpful
> material.
>
> Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>

So this will have the effect of making the docs build impossible for
folks who only have Python 2.  As I said before, this is a step that we
knew was coming, we just hadn't decided on the exact timing - I guess
this decides for us :)

That said, I'll copy linux-doc to see if anybody screams.  I assume this
is a 5.12 change?

Thanks,

jon