linux-kernel - Re: [PATCH v2] Documentation/sphinx: Fix Directive import error

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Message-ID: <20180302164254.GB31400@bombadil.infradead.org>
Date:   Fri, 2 Mar 2018 08:42:54 -0800
From:   Matthew Wilcox <willy@...radead.org>
To:     Jani Nikula <jani.nikula@...el.com>
Cc:     Takashi Iwai <tiwai@...e.de>, Jonathan Corbet <corbet@....net>,
        Jiri Slaby <jslaby@...e.cz>, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] Documentation/sphinx: Fix Directive import error

On Fri, Mar 02, 2018 at 06:01:50PM +0200, Jani Nikula wrote:
> On Fri, 02 Mar 2018, Takashi Iwai <tiwai@...e.de> wrote:
> > The sphinx.util.compat for Directive stuff was deprecated in the
> > recent Sphinx version, and now we get a build error.
> >
> > Let's import from the new place, docutils.parsers.rst, while keeping
> > the old sphinx.util.compat as fallback.
> >
> > Bugzilla: https://bugzilla.opensuse.org/show_bug.cgi?id=1083694
> > Signed-off-by: Takashi Iwai <tiwai@...e.de>
> > ---
> > v1->v2: Change the fallback order as Matthew suggested, the new one at first
> 
> So this crossed my mind as well... and then I thought it'll probably
> succeed on older Sphinx, and the fallback is not needed. The question
> is, are these equal? Can we just import from docutils.parsers.rst?

I found a github page which implies that docutils.parsers.rst.Directive
was added 12 years ago (!) so we're probably safe to rely on it:

https://github.com/docutils-mirror/docutils/commit/9649abee47b4ce4db51be1d90fcb1fb500fa78b3

Again, I'm no pythonista, so I may have muddled this.