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docs: drop the version constraints for sphinx and dependencies 

As discussed (see Links), there is some inertia to move to the recent
Sphinx versions for the doc build environment.

As first step, drop the version constraints and the related comments. As
sphinx depends on jinja2, jinja2 is pulled in automatically. So drop that.
Then, the sphinx-pre-install script will fail though with:

  Can't get default sphinx version from ./Documentation/sphinx/requirements.txt at ./scripts/sphinx-pre-install line 305.

The script simply expects to parse a version constraint with Sphinx in the
requirements.txt. That version is used in the script for suggesting the
virtualenv directory name.

To suggest a virtualenv directory name, when there is no version given in
the requirements.txt, one could try to guess the version that would be
downloaded with 'pip install -r Documentation/sphinx/requirements.txt'.
However, there seems no simple way to get that version without actually
setting up the venv and running pip. So, instead, name the directory with
the fixed name 'sphinx_latest'.

Finally update the Sphinx build documentation to reflect this directory
name change.

Link: https://lore.kernel.org/linux-doc/874jf4m384.fsf@meer.lwn.net/
Link: https://lore.kernel.org/linux-doc/20240226093854.47830-1-lukas.bulwahn@gmail.com/
Reviewed-by: Akira Yokosawa <akiyks@gmail.com>
Tested-by: Vegard Nossum <vegard.nossum@oracle.com>
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20240301141800.30218-1-lukas.bulwahn@gmail.com>
This commit is contained in:
Lukas Bulwahn 2024-03-01 15:18:00 +01:00 committed by Jonathan Corbet
parent 0df46e0991
commit b31274d58d
3 changed files with 11 additions and 26 deletions
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11
Documentation/doc-guide/sphinx.rst
View File

@ -48,13 +48,14 @@ or ``virtualenv``, depending on how your distribution packaged Python 3.
on the Sphinx version, it should be installed separately,
with ``pip install sphinx_rtd_theme``.
In summary, if you want to install Sphinx version 2.4.4, you should do::
In summary, if you want to install the latest version of Sphinx, you
should do::
$ virtualenv sphinx_2.4.4
$ . sphinx_2.4.4/bin/activate
(sphinx_2.4.4) $ pip install -r Documentation/sphinx/requirements.txt
$ virtualenv sphinx_latest
$ . sphinx_latest/bin/activate
(sphinx_latest) $ pip install -r Documentation/sphinx/requirements.txt
After running ``. sphinx_2.4.4/bin/activate``, the prompt will change,
After running ``. sphinx_latest/bin/activate``, the prompt will change,
in order to indicate that you're using the new environment. If you
open a new shell, you need to rerun this command to enter again at
the virtual environment before building the documentation.

7
Documentation/sphinx/requirements.txt
View File

@ -1,6 +1,3 @@
# jinja2>=3.1 is not compatible with Sphinx<4.0
jinja2<3.1
# alabaster>=0.7.14 is not compatible with Sphinx<=3.3
alabaster<0.7.14
Sphinx==2.4.4
alabaster
Sphinx
pyyaml

19
scripts/sphinx-pre-install
View File

@ -280,8 +280,6 @@ sub get_sphinx_version($)
sub check_sphinx()
{
my $default_version;
open IN, $conf or die "Can't open $conf";
while (<IN>) {
if (m/^\s*needs_sphinx\s*=\s*[\'\"]([\d\.]+)[\'\"]/) {
@ -293,18 +291,7 @@ sub check_sphinx()
die "Can't get needs_sphinx version from $conf" if (!$min_version);
open IN, $requirement_file or die "Can't open $requirement_file";
while (<IN>) {
if (m/^\s*Sphinx\s*==\s*([\d\.]+)$/) {
$default_version=$1;
last;
}
}
close IN;
die "Can't get default sphinx version from $requirement_file" if (!$default_version);
$virtenv_dir = $virtenv_prefix . $default_version;
$virtenv_dir = $virtenv_prefix . "latest";
my $sphinx = get_sphinx_fname();
if ($sphinx eq "") {
@ -318,8 +305,8 @@ sub check_sphinx()
die "$sphinx didn't return its version" if (!$cur_version);
if ($cur_version lt $min_version) {
printf "ERROR: Sphinx version is %s. It should be >= %s (recommended >= %s)\n",
$cur_version, $min_version, $default_version;
printf "ERROR: Sphinx version is %s. It should be >= %s\n",
$cur_version, $min_version;
$need_sphinx = 1;
return;
}