python3Packages.build123d: init at 0.10.0 by tnytown · Pull Request #433247 · NixOS/nixpkgs

tnytown · 2025-08-13T00:57:25Z

~~Depends on #433252.~~
Fixes #245258.

Adds build123d and its dependencies: ocpsvg, cadquery-ocp, lib3mf, and trianglesolver. A lot of these were based on derivations originally in https://github.com/vinszent/cq-flake; although I had to make some fairly involved changes to compile the latest versions of build123d and cadquery-ocp.

Tagging @vinszent and @marcus7070 for visibility as you seem to be the most involved in creating and maintaining cq-flake :)

Happy to split any of these changes out into individual PRs if necessary!

Things done

Add a 👍 reaction to pull requests you find important.

qbisi · 2025-08-13T01:21:37Z

Fixing the cyclic dependency of occt and vtk is a good point.
Please spilit the first two commits in a individiual pull request.

pkgs/development/libraries/vtk/generic.nix

pkgs/by-name/op/opencascade-occt/package.nix

tnytown · 2025-08-13T01:57:10Z

Fixing the cyclic dependency of occt and vtk is a good point.
Please spilit the first two commits in a individiual pull request.

Done in #433252 with requested changes :)

pkgs/development/python-modules/trianglesolver/default.nix

pkgs/development/python-modules/ocpsvg/default.nix

pkgs/development/python-modules/lib3mf/default.nix

pkgs/development/python-modules/build123d/default.nix

pkgs/by-name/op/opencascade-occt/package.nix

Sigmanificient · 2025-08-13T05:03:09Z

Diff lgtm, untested

tnytown · 2025-08-13T05:06:10Z

(Pushed because I realized I forgot a change in 29f3333dd114e0e084882a002ba223aa3e1bb1b6.) Running nixpkgs-review now, may take a few hours ...

tnytown · 2025-08-13T11:58:58Z

`nixpkgs-review` result

Generated using nixpkgs-review.

Command: nixpkgs-review pr 433247
Commit: 7f6a6a7f8834163ddbf363525d745c45ec57f49d

`x86_64-linux`

❌ 17 packages failed to build:

ants
mrtrix
python312Packages.build123d
python312Packages.build123d.dist
python312Packages.cadquery-ocp
python312Packages.cadquery-ocp.dist
python312Packages.ocpsvg
python312Packages.ocpsvg.dist
python312Packages.pyotb
python312Packages.pyotb.dist
python313Packages.build123d
python313Packages.build123d.dist
python313Packages.cadquery-ocp
python313Packages.cadquery-ocp.dist
python313Packages.ocpsvg
python313Packages.ocpsvg.dist
rtabmap

✅ 205 packages built:

appcsxcad
c3d
cloudcompare
csxcad
elastix
elmerfem
exhibit
expliot
expliot.dist
ezminc
f3d
f3d.man
freecad
gdcm
intensity-normalization (python313Packages.intensity-normalization)
intensity-normalization.dist (python313Packages.intensity-normalization.dist)
itk (itk_5)
itk_5_2
libsForQt5.qcsxcad (plasma5Packages.qcsxcad)
libsForQt5.qcsxcad.dev (plasma5Packages.qcsxcad.dev)
mirtk
octavePackages.dicom
openems
otb
paraview
pcl
python312Packages.dcmstack
python312Packages.dcmstack.dist
python312Packages.deid
python312Packages.deid.dist
python312Packages.dicom-numpy
python312Packages.dicom-numpy.dist
python312Packages.dicom2nifti
python312Packages.dicom2nifti.dist
python312Packages.dicomweb-client
python312Packages.dicomweb-client.dist
python312Packages.dipy
python312Packages.dipy.dist
python312Packages.f3d
python312Packages.f3d.man
python312Packages.fast-simplification
python312Packages.fast-simplification.dist
python312Packages.fslpy
python312Packages.fslpy.dist
python312Packages.gdcm
python312Packages.gstools
python312Packages.gstools.dist
python312Packages.heudiconv
python312Packages.heudiconv.dist
python312Packages.highdicom
python312Packages.highdicom.dist
python312Packages.intensity-normalization
python312Packages.intensity-normalization.dist
python312Packages.itk
python312Packages.lib3mf
python312Packages.lib3mf.dist
python312Packages.mayavi
python312Packages.mayavi.dist
python312Packages.medpy
python312Packages.medpy.dist
python312Packages.medvol
python312Packages.medvol.dist
python312Packages.napari-nifti
python312Packages.napari-nifti.dist
python312Packages.nibabel
python312Packages.nibabel.dist
python312Packages.nilearn
python312Packages.nilearn.dist
python312Packages.nipy
python312Packages.nipy.dist
python312Packages.nipype
python312Packages.nipype.dist
python312Packages.nitime
python312Packages.nitime.dist
python312Packages.nitransforms
python312Packages.nitransforms.dist
python312Packages.niworkflows
python312Packages.niworkflows.dist
python312Packages.pybids
python312Packages.pybids.dist
python312Packages.pydicom
python312Packages.pydicom.dist
python312Packages.pykrige
python312Packages.pykrige.dist
python312Packages.pylibjpeg
python312Packages.pylibjpeg-openjpeg
python312Packages.pylibjpeg-openjpeg.dist
python312Packages.pylibjpeg.dist
python312Packages.pymatgen
python312Packages.pymatgen.dist
python312Packages.pymedio
python312Packages.pymedio.dist
python312Packages.pynetdicom
python312Packages.pynetdicom.dist
python312Packages.pyorthanc
python312Packages.pyorthanc.dist
python312Packages.pyradiomics
python312Packages.pyradiomics.dist
python312Packages.python-csxcad
python312Packages.python-csxcad.dist
python312Packages.python-openems
python312Packages.python-openems.dist
python312Packages.pyvista
python312Packages.pyvista.dist
python312Packages.sfepy
python312Packages.sfepy.dist
python312Packages.simpleitk
python312Packages.simpleitk.dist
python312Packages.sumo
python312Packages.sumo.dist
python312Packages.templateflow
python312Packages.templateflow.dist
python312Packages.torchio
python312Packages.torchio.dist
python312Packages.trianglesolver
python312Packages.trianglesolver.dist
python312Packages.trx-python
python312Packages.trx-python.dist
python312Packages.vtk
python312Packages.xnatpy
python312Packages.xnatpy.dist
python313Packages.dcmstack
python313Packages.dcmstack.dist
python313Packages.deid
python313Packages.deid.dist
python313Packages.dicom-numpy
python313Packages.dicom-numpy.dist
python313Packages.dicom2nifti
python313Packages.dicom2nifti.dist
python313Packages.dicomweb-client
python313Packages.dicomweb-client.dist
python313Packages.dipy
python313Packages.dipy.dist
python313Packages.f3d
python313Packages.f3d.man
python313Packages.fast-simplification
python313Packages.fast-simplification.dist
python313Packages.fslpy
python313Packages.fslpy.dist
python313Packages.gdcm
python313Packages.gstools
python313Packages.gstools.dist
python313Packages.highdicom
python313Packages.highdicom.dist
python313Packages.itk
python313Packages.lib3mf
python313Packages.lib3mf.dist
python313Packages.medpy
python313Packages.medpy.dist
python313Packages.medvol
python313Packages.medvol.dist
python313Packages.napari-nifti
python313Packages.napari-nifti.dist
python313Packages.nibabel
python313Packages.nibabel.dist
python313Packages.nilearn
python313Packages.nilearn.dist
python313Packages.nipy
python313Packages.nipy.dist
python313Packages.nitime
python313Packages.nitime.dist
python313Packages.nitransforms
python313Packages.nitransforms.dist
python313Packages.pybids
python313Packages.pybids.dist
python313Packages.pydicom
python313Packages.pydicom.dist
python313Packages.pykrige
python313Packages.pykrige.dist
python313Packages.pylibjpeg
python313Packages.pylibjpeg-openjpeg
python313Packages.pylibjpeg-openjpeg.dist
python313Packages.pylibjpeg.dist
python313Packages.pymedio
python313Packages.pymedio.dist
python313Packages.pynetdicom
python313Packages.pynetdicom.dist
python313Packages.pyorthanc
python313Packages.pyorthanc.dist
python313Packages.pyotb
python313Packages.pyotb.dist
python313Packages.pyradiomics
python313Packages.pyradiomics.dist
python313Packages.python-csxcad
python313Packages.python-csxcad.dist
python313Packages.pyvista
python313Packages.pyvista.dist
python313Packages.simpleitk
python313Packages.simpleitk.dist
python313Packages.templateflow
python313Packages.templateflow.dist
python313Packages.torchio
python313Packages.torchio.dist
python313Packages.trianglesolver
python313Packages.trianglesolver.dist
python313Packages.trx-python
python313Packages.trx-python.dist
vtk-full (python313Packages.vtk)
python313Packages.xnatpy
python313Packages.xnatpy.dist
simpleitk
therion
vtk (vtk_9_5)
vtkWithQt5
vtkWithQt6

Error logs: `x86_64-linux`

ants

warning: Skipping impure flag -mtune=native because NIX_ENFORCE_NO_NATIVE is set
warning: Skipping impure flag -mtune=native because NIX_ENFORCE_NO_NATIVE is set
warning: Skipping impure flag -mtune=native because NIX_ENFORCE_NO_NATIVE is set
warning: Skipping impure flag -mtune=native because NIX_ENFORCE_NO_NATIVE is set
warning: Skipping impure flag -mtune=native because NIX_ENFORCE_NO_NATIVE is set
warning: Skipping impure flag -mtune=native because NIX_ENFORCE_NO_NATIVE is set
In file included from /build/source/Examples/ImageMathHelper3D.cxx:1:
/build/source/Examples/ImageMath_Templates.hxx: In function 'int ants::ReplicateDisplacement(int, char**) [with unsigned int ImageDimension = 3]':
/build/source/Examples/ImageMath_Templates.hxx:10554:40: warning: 'vec.itk::Vector::itk::FixedArray.itk::FixedArray::m_InternalArray[3]' may be used uninitialized [8;;https://gcc.gnu.org/onlinedocs/gcc-14.3.0/gcc/Warning-Options.html#index-Wmaybe-uninitialized�-Wmaybe-uninitialized8;;�]
10554 |   typename VectorRImageType::PixelType vec;
      |                                        ^~~
g++: fatal error: Killed signal terminated program cc1plus
compilation terminated.
make[2]: *** [Examples/CMakeFiles/antsUtilities.dir/build.make:261: Examples/CMakeFiles/antsUtilities.dir/ImageMathHelper3D.cxx.o] Error 1
make[2]: *** Waiting for unfinished jobs....
g++: fatal error: Killed signal terminated program cc1plus
compilation terminated.
make[2]: *** [Examples/CMakeFiles/antsUtilities.dir/build.make:149: Examples/CMakeFiles/antsUtilities.dir/antsRegistration3DFloat.cxx.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:730: Examples/CMakeFiles/antsUtilities.dir/all] Error 2
make: *** [Makefile:166: all] Error 2

tnytown · 2025-08-13T12:07:32Z

Hmm, seems to be a spurious failure? Can't imagine that these changes caused that issue. Rerunning ...

pkgs/development/python-modules/cadquery-ocp/default.nix

qbisi · 2025-09-29T05:03:34Z

In fact, since cadquery-ocp vendors the headers of the OCCT version it's designed to build against, it's using the 7.9 interface with the 7.8 library.

Can we replace the cadquery vendered occt's headers with the nixpkgs's one c.f. https://aur.archlinux.org/cgit/aur.git/tree/PKGBUILD?h=python-ocp#n107

So we can use the cadquery-ocp 7.9 branch with fetching submodule pywrap, no more splited source.

tnytown · 2025-09-29T05:54:26Z

In fact, since cadquery-ocp vendors the headers of the OCCT version it's designed to build against, it's using the 7.9 interface with the 7.8 library.

Can we replace the cadquery vendered occt's headers with the nixpkgs's one c.f. https://aur.archlinux.org/cgit/aur.git/tree/PKGBUILD?h=python-ocp#n107

So we can use the cadquery-ocp 7.9 branch with fetching submodule pywrap, no more splited source.

Maybe? I think in that case we would have to investigate how the config in the new branch interacts with older headers. Then we need to do more work to validate that the build succeeds and doesn't produce undesirable side effects.

I'm of the opinion that the current pywrap situation is a long-term undesirable hack, but it does work. The only maintenance burden that would come with it, IMO, is when we bump to 7.9. At that point, we just drop the big CMakeLists.txt patch and the pywrap fetch. If you'd rather take a different approach, I think we should try your earlier suggestion of (1) packaging opencascade-occt_7_9; (2) packaging cadquery-ocp 7.9 with the minimal config patching necessary for the Darwin build; and (3) modifying build123d to accept cadquery-ocp 7.9 with pythonRelaxDeps.

qbisi

Some file structure change suggestions.

pkgs/development/python-modules/cadquery-ocp/default.nix

qbisi · 2025-09-29T14:53:45Z

pkgs/development/python-modules/cadquery-ocp/default.nix

+      (lib.cmakeFeature "LLVM_DIR" "${lib.getDev libllvm}/lib/cmake/llvm")
+      (lib.cmakeFeature "Clang_DIR" "${lib.getDev libclang}/lib/cmake/clang")


I dont know cross build. But put llvmPackages.{libclang,llvm} in buildInputs should be suffice to help cmake find the config module.

pkgs/development/python-modules/cadquery-ocp/default.nix

qbisi · 2025-09-29T15:06:02Z

pkgs/development/python-modules/cadquery-ocp/default.nix

+      description = "Python wrapper for OCCT generated using pywrap";
+      homepage = "https://github.com/CadQuery/OCP";
+      license = lib.licenses.asl20;
+      maintainers = with lib.maintainers; [ tnytown ];


maybe add

broken = (lib.versions.majorMinor finalAttrs.version) != (lib.versions.majorMinor opencascade-occt');

to not block upgrade of opencascade-occt

pkgs/development/python-modules/cadquery-ocp/default.nix

tnytown · 2026-02-10T05:43:04Z

Took an initial stab at syncing cadquery-ocp and packaging 0.10.0. Some tests fail but weirdly they don't fail the build:

build123d> =========================== short test summary info ============================
build123d> FAILED tests/test_direct_api/test_face.py::TestFace::test_make_surface_patch - RuntimeError: Error building non-planar face with provided constraints
build123d> FAILED tests/test_direct_api/test_face.py::TestFace::test_make_surface_patch_error_checking - OCP.Standard.Standard_OutOfRange: NCollection_Sequence::ChangeValue
build123d> FAILED tests/test_persistence.py::TestPersistence::test_serialize_obj - TypeError: Read_s(): incompatible function arguments. The following argumen...
build123d> FAILED tests/test_persistence.py::TestPersistence::test_serialize_shape - TypeError: Read_s(): incompatible function arguments. The following argumen...
build123d> = 4 failed, 1318 passed, 1 skipped, 5 deselected, 5 xfailed, 2 xpassed, 4 warnings in 190.62s (0:03:10) =
build123d> Finished executing pytestCheckPhase
build123d> pytestCheckPhase completed in 3 minutes 12 seconds

qbisi · 2026-02-17T04:48:25Z

@tnytown Sorry for late review, I made a separate draft pr following the build logic of your work: #491280. You can take that draft pr as my advice for change. I prefer the latest 7.9.3.1 release cause we need not patch ocp.toml / pywrap, though ocp-7.9.3.1 is not yet compatible with build123d-0.10.0 or cq-editor.

I guess opencascade-occt 7.9.3 will have long term support (occt 8.0 is on the horizon so we will have both 7.9 and 8.0 for a long time). So it looks better we build cadquery-ocp based on occt 7.9.3. Further work needs to be done for cq-editor and build123d to valid the functionality of ocp-7.9.3 built on #491280.

tnytown · 2026-02-18T00:45:42Z

@qbisi no worries on the delay, thanks for cleaning the work up!

I guess opencascade-occt 7.9.3 will have long term support (occt 8.0 is on the horizon so we will have both 7.9 and 8.0 for a long time). So it looks better we build cadquery-ocp based on occt 7.9.3. Further work needs to be done for cq-editor and build123d to valid the functionality of ocp-7.9.3 built on #491280.

In this case, would you like to wait for official occt 7.9.3 support in build123d before we continue? I'm honestly not too enthused about the prospect of tracking down regressions with 7.9.3 given that we're already having weird issues with the test suite in 7.8.1.

tnytown · 2026-02-18T00:48:49Z

I just took a look and the latest (untagged) revision targets OCP 7.9! https://github.com/gumyr/build123d/blob/cb155f79d18f8247eb8e951617d0a3056be0ceec/pyproject.toml

nix-owners bot requested a review from natsukium August 13, 2025 00:59

tnytown changed the title ~~build123d: init at 0.9.1~~ python3Packages.build123d: init at 0.9.1 Aug 13, 2025

nix-owners bot requested a review from qbisi August 13, 2025 01:03

tnytown force-pushed the tnytown/build123d-0.9.1 branch from 4026045 to 162fd40 Compare August 13, 2025 01:13

qbisi suggested changes Aug 13, 2025

View reviewed changes

pkgs/development/libraries/vtk/generic.nix Outdated Show resolved Hide resolved

pkgs/development/libraries/vtk/generic.nix Show resolved Hide resolved

pkgs/by-name/op/opencascade-occt/package.nix Show resolved Hide resolved

tnytown mentioned this pull request Aug 13, 2025

opencascade-occt: add optional vtk dependency #433252

Merged

13 tasks

tnytown force-pushed the tnytown/build123d-0.9.1 branch from 162fd40 to 8c619f0 Compare August 13, 2025 01:55

tnytown force-pushed the tnytown/build123d-0.9.1 branch from 8c619f0 to ff42ecd Compare August 13, 2025 02:01

Sigmanificient requested changes Aug 13, 2025

View reviewed changes

tnytown force-pushed the tnytown/build123d-0.9.1 branch from 6487dfb to 329ac73 Compare August 13, 2025 04:59

Sigmanificient approved these changes Aug 13, 2025

View reviewed changes

Sigmanificient requested a review from qbisi August 13, 2025 05:02

nixpkgs-ci bot added the 12.approvals: 1 This PR was reviewed and approved by one person. label Aug 13, 2025

tnytown force-pushed the tnytown/build123d-0.9.1 branch from 329ac73 to 7f6a6a7 Compare August 13, 2025 05:05

tnytown force-pushed the tnytown/build123d-0.9.1 branch 4 times, most recently from 0abc09a to 532cf72 Compare August 14, 2025 05:08

nix-owners bot requested a review from amiloradovsky August 14, 2025 05:14

qbisi reviewed Aug 15, 2025

View reviewed changes

pkgs/development/python-modules/cadquery-ocp/default.nix Outdated Show resolved Hide resolved

tnytown force-pushed the tnytown/build123d-0.9.1 branch from 03a2d7a to b38f314 Compare September 29, 2025 14:43

qbisi suggested changes Sep 29, 2025

View reviewed changes

pkgs/development/python-modules/cadquery-ocp/default.nix Outdated Show resolved Hide resolved

nixpkgs-ci bot added the 2.status: merge conflict This PR has merge conflicts with the target branch label Jan 26, 2026

cjshearer mentioned this pull request Feb 1, 2026

cq-editor: init at 0.6.2 #486070

Open

13 tasks

tnytown force-pushed the tnytown/build123d-0.9.1 branch 2 times, most recently from f277fea to 30415b8 Compare February 9, 2026 07:12

tnytown force-pushed the tnytown/build123d-0.9.1 branch from 30415b8 to d20f134 Compare February 9, 2026 07:27

tnytown added 8 commits February 9, 2026 22:20

maintainers: add tnytown

0ac0223

python3Packages.trianglesolver: init at 1.2

7525696

python3Packages.lib3mf: init at 2.4.1.post1

e639fdf

opencascade-occt_7_8_1: init

6a60f5a

python3Packages.cadquery-ocp: init at 7.8.1.2

5a204b9

python3Packages.ocpsvg: init at 0.5.0

d1f57db

ocp-gordon: init at 0.1.18

6e89822

python3Packages.build123d: init at 0.10.0

a45624c

tnytown force-pushed the tnytown/build123d-0.9.1 branch from d20f134 to a45624c Compare February 10, 2026 05:41

tnytown changed the title ~~python3Packages.build123d: init at 0.9.1~~ python3Packages.build123d: init at 0.10.0 Feb 10, 2026

		(lib.cmakeFeature "LLVM_DIR" "${lib.getDev libllvm}/lib/cmake/llvm")
		(lib.cmakeFeature "Clang_DIR" "${lib.getDev libclang}/lib/cmake/clang")

Uh oh!

Conversation

tnytown commented Aug 13, 2025 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Things done

Uh oh!

qbisi commented Aug 13, 2025

Uh oh!

Uh oh!

Uh oh!

Uh oh!

tnytown commented Aug 13, 2025

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Sigmanificient commented Aug 13, 2025

Uh oh!

tnytown commented Aug 13, 2025 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

tnytown commented Aug 13, 2025

nixpkgs-review result

x86_64-linux

Uh oh!

tnytown commented Aug 13, 2025

Uh oh!

Uh oh!

qbisi commented Sep 29, 2025

Uh oh!

tnytown commented Sep 29, 2025 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

qbisi left a comment

Choose a reason for hiding this comment

Uh oh!

Uh oh!

Uh oh!

qbisi Sep 29, 2025 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Choose a reason for hiding this comment

Uh oh!

Uh oh!

Uh oh!

qbisi Sep 29, 2025

Choose a reason for hiding this comment

Uh oh!

Uh oh!

Uh oh!

tnytown commented Feb 10, 2026

Uh oh!

qbisi commented Feb 17, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

tnytown commented Feb 18, 2026

Uh oh!

tnytown commented Feb 18, 2026

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

3 participants

tnytown commented Aug 13, 2025 •

edited

Loading

tnytown commented Aug 13, 2025 •

edited

Loading

`nixpkgs-review` result

`x86_64-linux`

tnytown commented Sep 29, 2025 •

edited

Loading

qbisi Sep 29, 2025 •

edited

Loading

qbisi commented Feb 17, 2026 •

edited

Loading