Dear Ludovic,

thanks for your comments. I have uploaded a patch for freecad, this one:

https://github.com/FreeCAD/FreeCAD/commit/fafff3a08b7a6212ce3417e08b18cb2fc8e7e868

I hope this is fine.

Sincerely,
Lars

On 18 Feb 2025, at 18:19, Ludovic Courtès wrote:

Hi Lars,

Lars Bilke lars.bilke@ufz.de skribis:

gnu/packages/image-processing.scm (vtk): Update to 9.4.1.

Change-Id: Ife39df610c4487683a5c8d72b60eb750530c1358

Apparently this breaks at least freecad:

--8<---------------cut here---------------start------------->8---
cd /tmp/guix-build-freecad-1.0.0.drv-0/build/src/Mod/CAM && /gnu/store/2lxfijiqqljxdxr2ppqqrn5czkh4r1rq-cmake-minimal-3.24.2/bin/cmake -E copy /tmp/guix-build-freecad-1.0.0.drv-0/source/src/Mod/CAM/Path/Op/Util.py /tmp/guix-build-freecad-1.0.0.drv-0/build/Mod/CAM/Path/Op/Util.py
/tmp/guix-build-freecad-1.0.0.drv-0/source/src/3rdParty/salomesmesh/src/SMDS/SMDS_UnstructuredGrid.cpp: In member function ‘void SMDS_UnstructuredGrid::BuildLinks()’:
/tmp/guix-build-freecad-1.0.0.drv-0/source/src/3rdParty/salomesmesh/src/SMDS/SMDS_UnstructuredGrid.cpp:1030:25: error: no matching function for call to ‘vtkCellLinks::BuildLinks(SMDS_UnstructuredGrid*)’
1030 | GetLinks()->BuildLinks(this);
| ~~~~~~~~~~~~~~~~~~~~~~^~~~~~
In file included from /tmp/guix-build-freecad-1.0.0.drv-0/source/src/3rdParty/salomesmesh/inc/SMDS_UnstructuredGrid.hxx:30,
from /tmp/guix-build-freecad-1.0.0.drv-0/source/src/3rdParty/salomesmesh/src/SMDS/SMDS_UnstructuredGrid.cpp:20:
/gnu/store/gr8mwbl3zlx9hc4x9k5s9sgcy2kp4sr9-vtk-9.4.1/include/vtk-9.4/vtkCellLinks.h:64:8: note: candidate: ‘virtual void vtkCellLinks::BuildLinks()’
64 | void BuildLinks() override;
| ^~~~~~~~~~
/gnu/store/gr8mwbl3zlx9hc4x9k5s9sgcy2kp4sr9-vtk-9.4.1/include/vtk-9.4/vtkCellLinks.h:64:8: note: candidate expects 0 arguments, 1 provided
--8<---------------cut here---------------end--------------->8---

Could you take a look? (Perhaps the solution will be to retain the
previous version of VTK for use in packages like this one.)

More generally, could you test with:

guix build -P1 vtk@9.4.1 -P1 vtk@7

?

Dependent packages like ‘python-fenics-fiat’ are already broken, so it’s
“okay” to keep them broken.

Thanks,
Ludo’.