Error installing matplotlib

Hello, can anyone help?  All assistance gratefully received.  I am 
running python 3.13.3 on a Windows 11 machine and trying to do
     pip install matplotlib
(No, I don't need to say "python -m ...", I am running the right version 
of python.exe.)
This starts by generating the following output (which I can catch by 
redirecting it to a file)

Collecting matplotlib
   Using cached matplotlib-3.10.6.tar.gz (34.8 MB)
   Installing build dependencies: started
   Installing build dependencies: finished with status 'done'
   Getting requirements to build wheel: started
   Getting requirements to build wheel: finished with status 'done'
   Installing backend dependencies: started
   Installing backend dependencies: finished with status 'done'
   Preparing metadata (pyproject.toml): started
   Preparing metadata (pyproject.toml): finished with status 'error'

then prints error messages on the screen which are scrolled out too fast 
to see, but end as follows:

3: note: in expansion of macro 'PYBIND11_COMPAT_STRDUP'
                        rec_fget->doc = 
PYBIND11_COMPAT_STRDUP(rec_fget->doc);
                                        ^~~~~~~~~~~~~~~~~~~~~~
C:\Users\robcl\AppData\Local\Temp\pip-build-env-1ud913ho\overlay\Lib\site-packages\pybind11\include/pybind11/pybind11.h:248:36: 
note: (if you use '-fpermissive', G++ will accept your code, but 
allowing the use of an undeclared name is deprecated)
        #    define PYBIND11_COMPAT_STRDUP strdup
                                           ^~~~~~
C:\Users\robcl\AppData\Local\Temp\pip-build-env-1ud913ho\overlay\Lib\site-packages\pybind11\include/pybind11/pybind11.h:2379:33: 
note: in expansion of macro 'PYBIND11_COMPAT_STRDUP'
                        rec_fget->doc = 
PYBIND11_COMPAT_STRDUP(rec_fget->doc);
                                        ^~~~~~~~~~~~~~~~~~~~~~
C:\Users\robcl\AppData\Local\Temp\pip-build-env-1ud913ho\overlay\Lib\site-packages\pybind11\include/pybind11/pybind11.h:248:36: 
error: there are no arguments to 'strdup' that depend on a template 
parameter, so a declaration of 'strdup' must be available [-fpermissive]
        #    define PYBIND11_COMPAT_STRDUP strdup
                                           ^~~~~~
C:\Users\robcl\AppData\Local\Temp\pip-build-env-1ud913ho\overlay\Lib\site-packages\pybind11\include/pybind11/pybind11.h:2387:33: 
note: in expansion of macro 'PYBIND11_COMPAT_STRDUP'
                        rec_fset->doc = 
PYBIND11_COMPAT_STRDUP(rec_fset->doc);
                                        ^~~~~~~~~~~~~~~~~~~~~~
       In file included from ../src/_backend_agg_basic_types.h:17,
                        from ../src/_backend_agg.h:41,
                        from ../src/_backend_agg_wrapper.cpp:6:
       ../src/py_adaptors.h: In member function 'void 
mpl::PathIterator::set(pybind11::object, pybind11::object, bool, double)':
       ../src/py_adaptors.h:96:57: warning: comparison of integer 
expressions of different signedness: 'pybind11::ssize_t' {aka 'int'} and 
'unsigned int' [-Wsign-compare]
                    if (m_codes.ndim() != 1 || m_codes.shape(0) != 
m_total_vertices) {
~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~
       ../src/_backend_agg_wrapper.cpp: In lambda function:
       ../src/_backend_agg_wrapper.cpp:253:37: warning: narrowing 
conversion of 'renderer->RendererAgg::get_height()' from 'unsigned int' 
to 'int' inside { } [-Wnarrowing]
                        renderer->get_height(),
                        ~~~~~~~~~~~~~~~~~~~~^~
       ../src/_backend_agg_wrapper.cpp:253:37: warning: narrowing 
conversion of 'renderer->RendererAgg::get_height()' from 'unsigned int' 
to 'int' inside { } [-Wnarrowing]
       ../src/_backend_agg_wrapper.cpp:254:36: warning: narrowing 
conversion of 'renderer->RendererAgg::get_width()' from 'unsigned int' 
to 'int' inside { } [-Wnarrowing]
                        renderer->get_width(),
                        ~~~~~~~~~~~~~~~~~~~^~
       ../src/_backend_agg_wrapper.cpp:254:36: warning: narrowing 
conversion of 'renderer->RendererAgg::get_width()' from 'unsigned int' 
to 'int' inside { } [-Wnarrowing]
       ../src/_backend_agg_wrapper.cpp:258:39: warning: narrowing 
conversion of '(renderer->RendererAgg::get_width() * 4)' from 'unsigned 
int' to 'int' inside { } [-Wnarrowing]
                        renderer->get_width() * 4,
                        ~~~~~~~~~~~~~~~~~~~~~~^~~
       ../src/_backend_agg_wrapper.cpp:258:39: warning: narrowing 
conversion of '(renderer->RendererAgg::get_width() * 4)' from 'unsigned 
int' to 'int' inside { } [-Wnarrowing]
       ninja: build stopped: subcommand failed.
       INFO: autodetecting backend as ninja
       INFO: calculating backend command to run: 
C:\Users\robcl\AppData\Local\Temp\pip-build-env-1ud913ho\normal\Scripts\ninja.EXE
       [end of output]

   note: This error originates from a subprocess, and is likely not a 
problem with pip.
error: metadata-generation-failed

× Encountered error while generating package metadata.
╰─> See above for output.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.

Best wishes
Rob Cliffe
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