disable omp for arm64

.github/workflows/ci.yaml

@@ -42,6 +42,7 @@ jobs:
           CIBW_ARCHS: all
           CIBW_TEST_SKIP: '*-macosx_arm64'
           CIBW_BUILD_VERBOSITY: 3
+          CIBW_BEFORE_BUILD_MACOS: pip install toml && python scripts/disable_macos_arm64.py
 
       - uses: actions/upload-artifact@v3
         with:

scripts/disable_omp_arm64.py

@@ -0,0 +1,11 @@
+import platform
+
+import toml
+
+
+if platform.processor() == 'arm':
+    with open('pyproject.toml', 'rt') as f:
+        cfg = toml.load(f)
+    cfg['tool']['scikit-build']['cmake']['args'] = ['-DUSE_OPENMP=OFF']
+    with open('pyproject.toml', 'wt') as f:
+        toml.dump(cfg, f)