back to clang on macos

Author: peter-urban

.github/workflows/ci-mac.yml

@@ -67,12 +67,6 @@ jobs:
     - uses: actions/setup-python@v5
       with:
         python-version: '3.13'
-
-    # - name: Install LLVM and Clang
-    #   uses: KyleMayes/install-llvm-action@v2
-    #   with:
-    #     version: "18.1"
-    #     env: true
 
     - name: checkout main repository
       uses: actions/checkout@v4
@@ -85,17 +79,12 @@ jobs:
       with:
         key: super-ci-mac-2  # name for the cache
 
-    - run: brew install libomp boost coreutils gcc
+    - run: brew install libomp boost coreutils
 
     - run: pip install meson meson-python ninja pytest numpy
 
     - name: configure meson
       run: |
-        GCC_VER=$(brew info --json gcc | python3 -c "import json,sys; print(json.load(sys.stdin)[0]['versions']['stable'].split('.')[0])")
-        export CC="$(brew --prefix gcc)/bin/gcc-$GCC_VER"
-        export CXX="$(brew --prefix gcc)/bin/g++-$GCC_VER"
-        export BOOST_ROOT="$(brew --prefix boost)"
-        export PKG_CONFIG_PATH="$(brew --prefix boost)/lib/pkgconfig:${PKG_CONFIG_PATH:-}"
         meson setup builddir -Dpython.install_env=auto
 
     - name: compile project