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CadQuery / OCP

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cadquery-ocp overwrites vtkmodules

akaszynski opened this issue · comments

commented

Issue

Installing cadquery-ocp from PyPI silently overwrites vtkmodules, which might conflict with an existing installation of vtk. Here's a minimum working example that demonstrates this behavior:

$ python -m venv ocp-venv
$ source ocp-venv/bin/activate
$ pip install vtk==9.2.6
$ pip install cadquery-ocp==7.7.0
$ python -c "import vtk"
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/tmp/ocp-venv/lib/python3.10/site-packages/vtk.py", line 5, in <module>
    from vtkmodules.vtkWebCore import *
ImportError: Initialization failed for vtkWebCore, not compatible with vtkmodules.vtkCommonCore

Suggested Resolution

Require vtk when installing cadquery-ocp. It seems you'll have to pin the version of vtk.

commented

The cadquery-ocp wheel is maintained separately from OCP.

https://github.com/CadQuery/ocp-build-system

Please file this issue on that repo.