Recusion depth exceeded

[philipaxer]

Hi,

I am trying to get the gerber2ems flow running on my end, but run into issues
First, there seems to be a transitive dependency on the triangle library, but this doesnt build anymore with anything newer than python 3.11. Thus i manually went for:
pip install git+https://github.com/drufat/triangle

After that, I could install gerber2ems into the venv from OpenEMS successfully. Running gerber2ems -a on the example as indicated in the readme, gives me this:

  File "/tools/openEMS/venv/lib/python3.14/site-packages/matplotlib/path.py", line 287, in __deepcopy__
    p = copy.deepcopy(super(), memo)
  File "/usr/lib/python3.14/copy.py", line 157, in deepcopy
    y = _reconstruct(x, memo, *rv)
  File "/usr/lib/python3.14/copy.py", line 234, in _reconstruct
    y = func(*args)
  File "/usr/lib/python3.14/copy.py", line 233, in <genexpr>
    args = (deepcopy(arg, memo) for arg in args)
            ~~~~~~~~^^^^^^^^^^^
  File "/usr/lib/python3.14/copy.py", line 138, in deepcopy
    y = copier(memo)
  File "/tools/openEMS/venv/lib/python3.14/site-packages/matplotlib/path.py", line 287, in __deepcopy__
    p = copy.deepcopy(super(), memo)
  File "/usr/lib/python3.14/copy.py", line 142, in deepcopy
    rv = reductor(x)
RecursionError: maximum recursion depth exceeded
"""

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/tools/openEMS/venv/bin/gerber2ems", line 6, in <module>
    sys.exit(main())
             ~~~~^^
  File "/tools/openEMS/venv/lib/python3.14/site-packages/gerber2ems/main.py", line 48, in main
    geometry()
    ~~~~~~~~^^
  File "/tools/openEMS/venv/lib/python3.14/site-packages/gerber2ems/main.py", line 74, in geometry
    sim.add_gerbers()
    ~~~~~~~~~~~~~~~^^
  File "/tools/openEMS/venv/lib/python3.14/site-packages/gerber2ems/simulation.py", line 114, in add_gerbers
    contours = p.map(
        importer.get_triangles,
        [lc.file + ".png" for lc in cfg.layers if lc.kind == LayerKind.METAL],
    )
  File "/usr/lib/python3.14/multiprocessing/pool.py", line 367, in map
    return self._map_async(func, iterable, mapstar, chunksize).get()
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/lib/python3.14/multiprocessing/pool.py", line 774, in get
    raise self._value
RecursionError: maximum recursion depth exceeded