Try better diagnostics

Author: znicholls

.github/workflows/build-wheels.yaml

@@ -17,6 +17,7 @@ jobs:
       CIBW_SKIP: "cp39-win_arm64 cp310-win_arm64"
       # TODO: consider turning this on
       # CIBW_ENABLE: cpython-freethreading
+      CIBW_CONFIG_SETTINGS: "-Cbuild-dir=build"
       CIBW_BEFORE_BUILD_WINDOWS: >-
         pip install delvewheel
       CIBW_REPAIR_WHEEL_COMMAND_WINDOWS: >-
@@ -86,18 +87,6 @@ jobs:
           echo "CC=clang-cl" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
           echo "CXX=clang-cl" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
           echo "FC=flang-new" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
-      # From numpy: https://github.com/numpy/numpy/blob/37c9cb68ba7db9c48bc0e3354953c57a78d2b0e8/.github/workflows/wheels.yml#L133
-      - name: pkg-config-for-win-arm
-        if: ${{ matrix.os == 'windows-11-arm' }}
-        run: |
-          choco install -y --no-progress --stoponfirstfailure --checksum 6004DF17818F5A6DBF19CB335CC92702 pkgconfiglite
-          $CIBW = "${{ github.workspace }}/.openblas"
-          # pkgconfig needs a complete path, and not just "./openblas since the
-          # build is run in a tmp dir (?)
-          # It seems somewhere in the env passing, `\` is not
-          # passed through, so convert it to '/'
-          $CIBW = $CIBW.replace("\","/")
-          echo "CIBW_ENVIRONMENT_WINDOWS=PKG_CONFIG_PATH=$CIBW" >> $env:GITHUB_ENV
       # - name: Specify MSVC toolchain - windows-arm
       #   if: ${{ matrix.os == 'windows-11-arm' }}
       #   # When building on windows ARM, we need to use the MSVC toolchain
@@ -125,6 +114,14 @@ jobs:
       #     # (https://numpy.org/devdocs/f2py/windows/intel.html#f2py-and-windows-intel-fortran)
       #     compiler: "intel-classic"
       #     version: "2021.10"
+      # TODO: remove, diagnostic only
+      - name: Upload build dir
+        uses: actions/upload-artifact@v4
+        if: always()
+        with:
+          name: cibw-wheels-${{ matrix.os }}-${{ matrix.cibw_archs }}
+          path: ./build
+          if-no-files-found: error
       - name: Build wheels
         uses: pypa/cibuildwheel@v3.1.4  # matplotlib had v3.1.3
         with:

pyproject.toml

@@ -134,6 +134,7 @@ requires = [
 setup = [
     '--default-library=static',
     '-Dpyprojectwheelbuild=enabled',
+    # '-Dbuild-dir=build',
 ]
 install = [
     '--skip-subprojects',