pip install fails on "Could NOT find Qhull"

[nmz787-intel]

latest release (0.9.53) is failing to install, while just-prior release worked (0.9.52).

  Building wheel for gdstk (pyproject.toml): started
  Building wheel for gdstk (pyproject.toml): finished with status 'error'
  error: subprocess-exited-with-error

  × Building wheel for gdstk (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [28 lines of output]
      *** scikit-build-core 0.9.8 using CMake 3.30.0 (wheel)
      *** Configuring CMake...
      loading initial cache file build/cp39-cp39-linux_x86_64/CMakeInit.txt
      -- The CXX compiler identification is GNU 8.2.0
      -- The C compiler identification is GNU 8.2.0
      -- Detecting CXX compiler ABI info
      -- Detecting CXX compiler ABI info - done
      -- Check for working CXX compiler: /usr/pkgs/gcc/8.2.0/bin/g++ - skipped
      -- Detecting CXX compile features
      -- Detecting CXX compile features - done
      -- Detecting C compiler ABI info
      -- Detecting C compiler ABI info - done
      -- Check for working C compiler: /usr/pkgs/gcc/8.2.0/bin/gcc - skipped
      -- Detecting C compile features
      -- Detecting C compile features - done
      -- Found ZLIB: /usr/lib64/libz.so (found suitable version "1.2.11", minimum required is "1.2.7")
      CMake Error at /tmp/pip-build-env-msgx5xg0/normal/lib/python3.9/site-packages/cmake/data/share/cmake-3.30/Modules/FindPackageHandleStandardArgs.cmake:233 (message):
        Could NOT find Qhull (missing: QHULL_LIBRARY QHULL_INCLUDE_DIR) (Required
        is at least version "8")
      Call Stack (most recent call first):
        /tmp/pip-build-env-msgx5xg0/normal/lib/python3.9/site-packages/cmake/data/share/cmake-3.30/Modules/FindPackageHandleStandardArgs.cmake:603 (_FPHSA_FAILURE_MESSAGE)
        cmake_modules/FindQhull.cmake:170 (find_package_handle_standard_args)
        src/CMakeLists.txt:23 (find_package)

      -- Configuring incomplete, errors occurred!

      *** CMake configuration failed
      [end of output]

  note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for gdstk

[heitzmann]

This is a problem with CMake not finding qhull in your system, but there were no changes to that between release. This is probably related to some qhull installation change on the host.

[nmz787-intel]

hmm, forcing my pip requirements.txt list to use 0.9.52 allows pip to proceed successfully. Is there any possibility some qhull files didn't get packaged and uploaded to pypi?

[heitzmann]

Very strange. The only qhull-related installation file is in cmake_modules, but that is present in the source distribution in pypi.