MAINT: Build against latest qt6-main

[larsoner]

Checklist

• Used a personal fork of the feedstock to propose changes
• Bumped the build number (if the version is unchanged)
• Reset the build number to 0 (if the version changed)
• Re-rendered with the latest conda-smithy (Use the phrase @conda-forge-admin, please rerender in a comment in this PR for automated rerendering)
• Ensured the license file is being packaged.

I know #354 is in progress, but in the meantime I think just ticking the build number and merging should fix incompatibility with the latest qt6-main, i.e. allow this to succeed:

$ conda create -n vtktest "vtk=9.3.1=*qt*" "qt6-main=6.8.1"
Channels:
 - conda-forge
Platform: linux-64
Collecting package metadata (repodata.json): done
Solving environment: failed

LibMambaUnsatisfiableError: Encountered problems while solving:
  - package vtk-base-9.3.1-qt_py312h1234567_200 requires qt6-main >=6.7.2,<6.8.0a0, but none of the providers can be installed

Could not solve for environment specs
The following packages are incompatible
├─ qt6-main 6.8.1**  is installable with the potential options
│  ├─ qt6-main 6.8.1, which can be installed;
│  └─ qt6-main 6.8.1 would require
│     └─ libxcb >=1.16,<1.17.0a0 , which can be installed;
└─ vtk 9.3.1 *qt* is not installable because there are no viable options
   ├─ vtk 9.3.1 would require
   │  └─ vtk-base [9.3.1 qt_py310h1234567_200|9.3.1 qt_py310h2c847e9_204|...|9.3.1 qt_py39hff486e7_206], which requires
   │     └─ qt6-main >=6.7.2,<6.8.0a0 , which conflicts with any installable versions previously reported;
   └─ vtk 9.3.1 would require
      └─ vtk-base [9.3.1 qt_py310h9617cfe_209|9.3.1 qt_py311h7158b74_209|9.3.1 qt_py312hc73667e_209|9.3.1 qt_py313h576883f_209|9.3.1 qt_py39he1f0fb8_209], which requires
         ├─ libxcb >=1.17.0,<2.0a0 , which conflicts with any installable versions previously reported;
         └─ qt6-main >=6.7.3,<6.8.0a0 , which conflicts with any installable versions previously reported.

Even if 9.4 lands soon it would still be nice to have a 9.3.1 variant that works with newer Qt (e.g., for PyVista which now pins to <9.4 until they improve compat).

(FYI my motivation is that VTK is currently the only dependency holding me back from using PySide 6.8 in a standalone installer I'm creating.)

[larsoner]

@conda-forge-admin, please rerender

[conda-forge-admin]

Hi! This is the friendly automated conda-forge-linting service.

I wanted to let you know that I linted all conda-recipes in your PR (recipe/meta.yaml) and found some lint.

Here's what I've got...

For recipe/meta.yaml:

• ❌ Recipe maintainer "Maxyme" does not exist

For recipe/meta.yaml:

• ℹ️ The recipe is not parsable by parser conda-souschef (grayskull). Your recipe may not receive automatic updates and/or may not be compatible with conda-forge's infrastructure. Please check the logs for more information and ensure your recipe can be parsed.
• ℹ️ The recipe is not parsable by parser conda-recipe-manager. Your recipe may not receive automatic updates and/or may not be compatible with conda-forge's infrastructure. Please check the logs for more information and ensure your recipe can be parsed.

_{This message was generated by GitHub Actions workflow run https://github.com/conda-forge/conda-forge-webservices/actions/runs/12375391990. Examine the logs at this URL for more detail.}

[conda-forge-admin]

Hi! This is the friendly automated conda-forge-webservice.

I tried to rerender for you, but it looks like there was nothing to do.

_{This message was generated by GitHub Actions workflow run https://github.com/conda-forge/conda-forge-webservices/actions/runs/12375402853. Examine the logs at this URL for more detail.}

[larsoner]

Yikes hope these failures are just because GitHub is having a bad day. I'll request CI restart once things settle

[larsoner]

@conda-forge-admin please restart ci

[conda-forge-admin]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe/meta.yaml) and found it was in an excellent condition.

I do have some suggestions for making it better though...

For recipe/meta.yaml:

• ℹ️ The recipe is not parsable by parser conda-souschef (grayskull). Your recipe may not receive automatic updates and/or may not be compatible with conda-forge's infrastructure. Please check the logs for more information and ensure your recipe can be parsed.
• ℹ️ The recipe is not parsable by parser conda-recipe-manager. Your recipe may not receive automatic updates and/or may not be compatible with conda-forge's infrastructure. Please check the logs for more information and ensure your recipe can be parsed.

_{This message was generated by GitHub Actions workflow run https://github.com/conda-forge/conda-forge-webservices/actions/runs/12390668152. Examine the logs at this URL for more detail.}

[larsoner]

Well I'm mystified about the error, no real meaningful/informative traceback that I can find 😢

[Tobias-Fischer]

CMake Error at CMake/vtkModule.cmake:4796 (message):
Could not find the LZMA external dependency.
Call Stack (most recent call first):
CMake/vtkModule.cmake:5396 (vtk_module_find_package)
CMake/vtkModule.cmake:5264 (vtk_module_third_party_external)
ThirdParty/lzma/CMakeLists.txt:1 (vtk_module_third_party)

[larsoner]

Thanks @Tobias-Fischer ! Feel free to merge if you agree it's worth getting a rebuild against latest qt6-main 👍