I just bumped it in https://github.com/sagemath/sage/pull/39680
Please review.

On Tue, Mar 11, 2025 at 8:30 PM John H Palmieri <jhpalmier...@gmail.com> wrote:
>
> I think the problem is Sphinx: my guess is that when the Sphinx version got 
> bumped in https://github.com/sagemath/sage/pull/39577, sphinxcontrib-htmlhelp 
> also needed a bump. If I look at the Sphinx build log, I see:
>
> spkg-pipinst] ERROR: Could not find a version that satisfies the requirement 
> sphinxcontrib-htmlhelp>=2.0.6 (from sphinx) (from versions: 2.0.5)
> [spkg-pipinst] ERROR: No matching distribution found for 
> sphinxcontrib-htmlhelp>=2.0.6
>
> I also see this:
> [spkg-pipinst] Warning: The installation needed to use "--no-deps 
> --ignore-installed --ignore-requires-python" to succeed. This means that a 
> dependencies file in build/pkgs/ needs to be updated. Please report this to 
> sage-devel@googlegroups.com, including the build log of this package.
>
> I don't know why the build was considered successful after this, but 
> apparently it was. Anyway, consider this as having been reported.
>
> On Tuesday, March 11, 2025 at 5:39:59 PM UTC-7 John H Palmieri wrote:
>>
>> I see this too (I'm using OS X, don't know the situation for other 
>> platforms). I think the problem is somehow with Python3. If I modify the 
>> src/bin/sage-env script (which is where SAGE_NUM_THREADS gets read and 
>> perhaps modified) to directly run the script sage-num-threads.py, I get an 
>> error, and that error means that sage-env uses the default value of "1" for 
>> SAGE_NUM_THREADS.
>>
>> I applied this change:
>>
>> diff --git a/src/bin/sage-env b/src/bin/sage-env
>> index 5a53ab1d2c..3000b4d983 100644
>> --- a/src/bin/sage-env
>> +++ b/src/bin/sage-env
>> @@ -580,6 +580,9 @@ case "$SAGE_NUM_THREADS,$SAGE_NUM_THREADS_PARALLEL" in
>>          # First, figure out the right values for SAGE_NUM_THREADS (default
>>          # number of threads) and SAGE_NUM_THREADS_PARALLEL (default number 
>> of
>>          # threads when parallel execution is asked explicitly).
>> +
>> +        sage-num-threads.py
>> +
>>          sage_num_threads_array=$(sage-num-threads.py 2>/dev/null || echo 1 
>> 2 1)
>>          sage_num_threads_array="${sage_num_threads_array% *}" # strip third 
>> item
>>          SAGE_NUM_THREADS="${sage_num_threads_array% *}" # keep first item
>>
>> If I run "sage" or "sage -sh", I see
>>
>> /Users/palmieri/Sage/git/sage/local/var/lib/sage/venv-python3.12/bin/sage-num-threads.py:4:
>>  DeprecationWarning: pkg_resources is deprecated as an API. See 
>> https://setuptools.pypa.io/en/latest/pkg_resources.html
>>   __import__('pkg_resources').require('sagemath-standard==10.6b8')
>> Traceback (most recent call last):
>>   File 
>> "/Users/palmieri/Sage/git/sage/local/var/lib/sage/venv-python3.12/lib/python3.12/site-packages/pkg_resources/__init__.py",
>>  line 656, in _build_master
>>     ws.require(__requires__)
>>   File 
>> "/Users/palmieri/Sage/git/sage/local/var/lib/sage/venv-python3.12/lib/python3.12/site-packages/pkg_resources/__init__.py",
>>  line 1063, in require
>>     needed = self.resolve(parse_requirements(requirements))
>>              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>>   File 
>> "/Users/palmieri/Sage/git/sage/local/var/lib/sage/venv-python3.12/lib/python3.12/site-packages/pkg_resources/__init__.py",
>>  line 890, in resolve
>>     dist = self._resolve_dist(
>>            ^^^^^^^^^^^^^^^^^^^
>>   File 
>> "/Users/palmieri/Sage/git/sage/local/var/lib/sage/venv-python3.12/lib/python3.12/site-packages/pkg_resources/__init__.py",
>>  line 936, in _resolve_dist
>>     raise VersionConflict(dist, req).with_context(dependent_req)
>> pkg_resources.ContextualVersionConflict: (sphinxcontrib-htmlhelp 2.0.5 
>> (/Users/palmieri/Sage/git/sage/local/var/lib/sage/venv-python3.12/lib/python3.12/site-packages),
>>  Requirement.parse('sphinxcontrib-htmlhelp>=2.0.6'), {'sphinx'})
>>
>> Sage provides sphinxcontrib-htmlhelp 2.0.5. I don't know what's looking for 
>> 2.0.6; I got no hits when I ran 'git grep "2[.]0[.]6" '.
>>
>> On Tuesday, March 11, 2025 at 4:13:41 PM UTC-7 enriqu...@gmail.com wrote:
>>>
>>>
>>> For 10.5 with python 3.12.5, sage.parallel.ncpus.ncpus() is 1 without 
>>> giving a value to SAGE_NUM_THREADS and 16 if sage is opened as 
>>> "SAGE_NUM_THREADS=16 sage". For 10.6.beta9 (python 3.13.2), the value is 
>>> always one; in another computer 10.6.beta9 is using python 3.12.5 and the 
>>> value is always one.
>>> El miércoles, 12 de marzo de 2025 a las 6:15:27 UTC+9, dim...@gmail.com 
>>> escribió:
>>>>
>>>> On Mon, Mar 10, 2025 at 4:28 AM enriqu...@gmail.com
>>>> <enriqu...@gmail.com> wrote:
>>>> >
>>>> > If I set the variable SAGE_NUM_THREADS to a number of cores before 
>>>> > opening a sage session (command line or jupyterlab) there is a different 
>>>> > behaviour in 10.5 and in 10.6beta;
>>>> > parallel computation can be done in 10.5, there is no effect in the beta 
>>>> > version (I do not know when it started to fail). In the beta version 
>>>> > parallel computation is possible declaring the number of cores using the 
>>>> > following hack (suggested to me at some point by Miguel Marco)
>>>> > def miscpus():
>>>> > return "put here the number of cores"
>>>> > sage.parallel.ncpus.ncpus=miscpus
>>>> > Is it possible to know when SAGE_NUM_THREADS lost its effects?
>>>>
>>>> what is the output of sage.parallel.ncpus.ncpus() in 10.5 and in
>>>> 10.6.beta* for you?
>>>> (without using the hack above). Are they using the same Python version?
>>>>
>>>> The code for sage.parallel.ncpus.ncpus didn't change for a year, since 
>>>> 10.3.
>>>>
>>>> Dima
>>>>
>>>>
>>>>
>>>>
>>>> > Thanks, Enrique.
>>>> >
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>
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