Implement Path.__deepcopy__ avoiding infinite recursion - #30198

…finite recursion

…198-on-v3.10.x

Backport PR #30198 on branch v3.10.x (Implement Path.__deepcopy__ avoiding infinite recursion)

* matplotlib/matplotlib#30198: Python 3.14 compatible deepcopy.

* What's New entry.

* What's new line break.

* Fix Sphinx bug with duplicated labels.

* What's New addition.

* Remove Python<3.14 pin from pyproject.toml; indicating compatibility, but not yet support (i.e. CI unchanged for now).

* Better deepcopy docstring.

* matplotlib/matplotlib#30198: Python 3.14 compatible deepcopy.

* Remove Python 3.14 pin.

* Support Python 3.14.

* Fix dumb versioning in test_python_versions.

* Drop support for Python 3.11.

* Update lock-files.

* Removed `geovista` from py314 requirements.

  * pytest skips added to geovista experimental tests if import missing.

* Refreshed lockfiles (no geovista in py314 lock)

* Fixed lockfiles (were using JFrog Artifactory URL)

* Added optional skips for doctests

* Better geovista check in conf.py and reinstate missing doctest import

* Updated whatsnew

* Reference #6902 (reinstate goevista) in py314 YML file

* Link `iris.yml` to `py314.yml` (and by association `readthedocs.yml`)

---------

Co-authored-by: ukmo-ccbunney <christopher.bunney@metoffice.gov.uk>
Co-authored-by: Chris Bunney <48915820+ukmo-ccbunney@users.noreply.github.com>

…#10702)

## 📝 Summary

Closes #10680

`plots.py`, `dataflow.py`, and `markdown.py` under `marimo/_tutorials/`
are pinned to `matplotlib==3.10.1`. That version hits an infinite
recursion in `Path.__deepcopy__` when `_render_figure_mimebundle` calls
`savefig(bbox_inches="tight")`, which forces a full draw pass under
marimo's sandboxed edit mode. The recursion happens because `deepcopy`'s
memo dict gets looked up via `super()` inside `Path.__deepcopy__`, and
on the affected matplotlib version that lookup keeps recursing into
itself instead of terminating.

The fix for that recursion landed upstream in
matplotlib/matplotlib#30198, and 3.10.9 already carries it. `sql.py` in
the same directory is already on 3.10.9 and has never hit this, which is
what pointed me at the fix in the first place.

Bumping the three affected tutorials to `matplotlib==3.10.9` to match.

## 📋 Pre-Review Checklist

- [x] For large changes, or changes that affect the public API: this
change was discussed or approved through an issue, on Discord, or the
community discussions. (See #10680, where this was reported and the fix
was proposed and confirmed correct in the comments.)
- [ ] Any AI generated code has been reviewed line-by-line by the human
PR author, who stands by it.
- [ ] Video or media evidence is provided for any visual changes
(optional).

## ✅ Merge Checklist

- [x] I have read the contributor guidelines.
- [x] Documentation has been updated where applicable, including
docstrings for API changes. (Not applicable, this is a dependency pin
change with no API surface.)
- [ ] Tests have been added for the changes made. (Not applicable, this
is a version pin bump in tutorial scripts, not a code change with new
logic to test.)

…marimo-team#10702)

## 📝 Summary

Closes marimo-team#10680

`plots.py`, `dataflow.py`, and `markdown.py` under `marimo/_tutorials/`
are pinned to `matplotlib==3.10.1`. That version hits an infinite
recursion in `Path.__deepcopy__` when `_render_figure_mimebundle` calls
`savefig(bbox_inches="tight")`, which forces a full draw pass under
marimo's sandboxed edit mode. The recursion happens because `deepcopy`'s
memo dict gets looked up via `super()` inside `Path.__deepcopy__`, and
on the affected matplotlib version that lookup keeps recursing into
itself instead of terminating.

The fix for that recursion landed upstream in
matplotlib/matplotlib#30198, and 3.10.9 already carries it. `sql.py` in
the same directory is already on 3.10.9 and has never hit this, which is
what pointed me at the fix in the first place.

Bumping the three affected tutorials to `matplotlib==3.10.9` to match.

## 📋 Pre-Review Checklist

- [x] For large changes, or changes that affect the public API: this
change was discussed or approved through an issue, on Discord, or the
community discussions. (See marimo-team#10680, where this was reported and the fix
was proposed and confirmed correct in the comments.)
- [ ] Any AI generated code has been reviewed line-by-line by the human
PR author, who stands by it.
- [ ] Video or media evidence is provided for any visual changes
(optional).

## ✅ Merge Checklist

- [x] I have read the contributor guidelines.
- [x] Documentation has been updated where applicable, including
docstrings for API changes. (Not applicable, this is a dependency pin
change with no API surface.)
- [ ] Tests have been added for the changes made. (Not applicable, this
is a version pin bump in tutorial scripts, not a code change with new
logic to test.)