[unopy] Test the TestPyPI artifacts

[cvanaret]

No description provided.

[amontoison]

The issue for Ubuntu is related to cxx11 string ABI:
https://docs.binarybuilder.org/stable/tricksy_gotchas/

We will also get the same error on windows (if we found a way to use unopy with CI on this platform).
I need to recompile UnoUtils.

[cvanaret]

@amontoison how come the current artifacts from PyPI work fine, but the new TestPyPI artifacts fail? Did we change anything that would cause this cxx11 string ABI issue?

[amontoison]

I think it was always there.
But I checked the symbols in the precompiled library of UnoUtils and nothing is wrong.
The issue is with cibuildwheel.
The flag -D_GLIBCXX_USE_CXX11_ABI=0 is forced somewhere while we want -D_GLIBCXX_USE_CXX11_ABI=1.

[cvanaret]

I see. Note: the TestPyPI artifacts were built with the cibuildwheel action, I'm now rebuilding in #480 with a direct call cibuildwheel --output-dir ${{github.workspace}}/wheelhouse, like we have in the main branch. Could be the source of the problem.

[amontoison]

The good news is that now I understand why we can't do a static linking of HiGHS on Windows, we have the same issue on Linux but the linker is more permissive and we only have the error at runtime.

[amontoison]

I also suggest to test all platforms (aarch64 linux and x64 mac are missing).

[amontoison]

@cvanaret If it can help:
ralna/GALAHAD@95441a4#diff-6b39a2f1a6399aa39e427fb4c11a7b552e615a2d83a3c36aa6dd6ddbbb8281f4

I remember that Jari spend a lot of time on this issue.

[cvanaret]

@amontoison cool, that's exactly what Claude asked me to add to __init__py (33502d4) 😃

[cvanaret]

@amontoison good news! If we exclude libhighs.dll from the wheels, unopy runs on Windows :)
https://github.com/cvanaret/Uno/actions/runs/22777727310/job/66075263282?pr=549

[amontoison]

We can maybe do a release of unopy for Windows without it and add it later?
We still need to understand why HiGHS 1.13 is failing with Uno

[cvanaret]

We can maybe do a release of unopy for Windows without it and add it later? We still need to understand why HiGHS 1.13 is failing with Uno

Agreed. Then we can finally merge #480. I'll tag you when it's ready.

[amontoison]

@cvanaret Should we close this PR?

[cvanaret]

@amontoison there is useful code to detect DLL errors in wheels. I would keep it open in case we need it when we add HiGHS.