try macos 11 arm64 build

.github/workflows/build.yml

@@ -109,6 +109,58 @@ jobs:
           name: wheel
           path: dist/*
 
+
+  build-mac11-arm64:
+    runs-on: macos-11
+    strategy:
+      matrix:
+        python-version: [ '3.9.13' ]
+        # Requires universal2 build of python, which we get if we ask for 3.10.5 x86! Pypy not available in universal2
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          submodules: recursive
+
+      - name: Setup Python
+        uses: actions/setup-python@v2.2.2
+        with:
+          python-version: ${{ matrix.python-version }}
+          architecture: x64
+
+      # Only build raylib for arm64 (although we could make a fat universal2 binary by asking for x86_64 as well)
+      - name: Build raylib
+        run: |
+          cd raylib-c
+          mkdir build
+          cd build
+          cmake -DBUILD_EXAMPLES=off -DCMAKE_OSX_ARCHITECTURES="arm64" -DINCLUDE_EVERYTHING=on -DSUPPORT_FILEFORMAT_JPG=on -DWITH_PIC=on -DCMAKE_BUILD_TYPE=Release ..
+          make -j2
+          sudo make install
+      - name: Copy extras
+        run: |
+          sudo cp physac/src/physac.h /usr/local/include/
+          sudo cp raygui/src/raygui.h /usr/local/include/
+
+      # Name defaults to universal2 and it technically is, but it wont run on x86_64 because we didnt build raylib for that
+      # so symbols are missing.  So we override name to arm64.  Why don't we make a working universal2 wheel?  Because
+      # I'd rather have a separate x86_64 that I can test, and I want it to work on 10_15 but I'm not sure a 'macosx_10_15_universal2' is valid
+      # given that there is no SDK for universal until macosx_11_0
+      - name: Build raylib-python-cffi
+        run: |
+          python -m pip install --upgrade pip
+          pip3 install cffi
+          pip3 install wheel
+          python setup.py bdist_wheel --plat-name macosx_11_0_arm64 --py-limited-api=cp39
+
+
+      - name: Upload build Artifact wheel
+        uses: actions/upload-artifact@v2.2.4
+        with:
+          name: wheel
+          path: dist/*
+
+
+
   build-linux:
     runs-on: ubuntu-18.04
     strategy: