Re: [PATCH v3 5/6] meson: prefer 'sphinx-build' to 'sphinx-build-3'

[Markus Armbruster <armbru@redhat.com>]

John Snow <jsnow@redhat.com> writes:

> Once upon a time, "sphinx-build" on certain RPM platforms invoked
> specifically a Python 2.x version, while "sphinx-build-3" was a distro
> shim for the Python 3.x version.
>
> These days, none of our supported platforms utilize a 2.x version, so it
> should be safe to search for 'sphinx-build' prior to 'sphinx-build-3',
> which will prefer pip/venv installed versions of sphinx if they're
> available.
>
> This adds an extremely convenient ability to test document building
> ability in QEMU across multiple versions of Sphinx for the purposes of
> compatibility testing.
>
> Signed-off-by: John Snow <jsnow@redhat.com>
> ---
>  docs/meson.build | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/docs/meson.build b/docs/meson.build
> index 9136fed3b73..906034f9a87 100644
> --- a/docs/meson.build
> +++ b/docs/meson.build
> @@ -1,5 +1,5 @@
>  if get_option('sphinx_build') == ''
> -  sphinx_build = find_program(['sphinx-build-3', 'sphinx-build'],
> +  sphinx_build = find_program(['sphinx-build', 'sphinx-build-3'],
>                                required: get_option('docs'))
>  else
>    sphinx_build = find_program(get_option('sphinx_build'),

Do we still need to check for sphinx-build-3?  Or asked differently, is
there any supported build host that provides only sphinx-build-3?