Try fix for macOS amd64 wheels first

.github/workflows/publish_pypi.yml

@@ -112,18 +112,6 @@ jobs:
       - name: Clone pybind11 repo (no history)
         run: git clone --depth 1 --branch v2.11.1 https://github.com/pybind/pybind11.git
 
-      - uses: fortran-lang/setup-fortran@v1.6
-        id: setup-fortran
-        with:
-          compiler: gcc
-          version: 12
-
-      - name: Install SuiteSparse and SUNDIALS on macOS
-        if: matrix.os == 'macos-12'
-        run: |
-          python -m pip install cmake wget
-          python scripts/install_KLU_Sundials.py
-
       - name: Build wheels on Linux
         run: pipx run cibuildwheel --output-dir wheelhouse
         if: matrix.os == 'ubuntu-latest'
@@ -141,8 +129,47 @@ jobs:
         run: pipx run cibuildwheel --output-dir wheelhouse
         env:
           MACOSX_DEPLOYMENT_TARGET: 11.1
-          CIBW_BEFORE_BUILD_MACOS: >
+          # Sourced from
+          # https://github.com/scipy/scipy/blob/f2d4775e7762fad984f8f0acd8227c725ff21630/tools/wheels/cibw_before_build_macos.sh#L23-L49
+          CIBW_BEFORE_BUILD_MACOS: |
             python -m pip install --upgrade cmake casadi setuptools wheel
+
+            # download gfortran with proper macos minimum version (11.0)
+            curl -L https://github.com/isuruf/gcc/releases/download/gcc-11.3.0-2/gfortran-darwin-x86_64-native.tar.gz -o gfortran.tar.gz
+
+            GFORTRAN_SHA256=$(shasum --algorithm 256 gfortran.tar.gz)
+            KNOWN_SHA256="981367dd0ad4335613e91bbee453d60b6669f5d7e976d18c7bdb7f1966f26ae4  gfortran.tar.gz"
+            if [ "$GFORTRAN_SHA256" != "$KNOWN_SHA256" ]; then
+              echo "SHA256 mismatch for gfortran.tar.gz"
+              echo "expected: $KNOWN_SHA256"
+              echo "got: $GFORTRAN_SHA256"
+              exit 1
+            fi
+
+            mkdir -p gfortran_installed/
+            tar -xv -C gfortran_installed/ -f gfortran.tar.gz
+
+            export FC=$(pwd)/gfortran_installed/bin/gfortran
+            export PATH=$(pwd)/gfortran_installed/bin:$PATH
+
+            # link libgfortran.5.dylib, libgfortran.dylib, libquadmath.0.dylib, libquadmath.dylib
+            # and place them in $HOME/.local/lib, and then change rpath
+            # to $HOME/.local/lib
+
+            for lib in libgfortran.5.dylib libgfortran.dylib libquadmath.0.dylib libquadmath.dylib; do
+              cp $(dirname $(gfortran --print-file-name=$lib))/$lib $HOME/.local/lib
+              install_name_tool -id $HOME/.local/lib/$lib $HOME/.local/lib/$lib
+              install_name_tool -change $(dirname $(gfortran --print-file-name=$lib))/$lib $HOME/.local/lib/$lib $HOME/.local/lib/libgfortran.5.dylib
+              install_name_tool -change $(dirname $(gfortran --print-file-name=$lib))/$lib $HOME/.local/lib/$lib $HOME/.local/lib/libgfortran.dylib
+              install_name_tool -change $(dirname $(gfortran --print-file-name=$lib))/$lib $HOME/.local/lib/$lib $HOME/.local/lib/libquadmath.0.dylib
+              install_name_tool -change $(dirname $(gfortran --print-file-name=$lib))/$lib $HOME/.local/lib/$lib $HOME/.local/lib/libquadmath.dylib
+            done
+
+            export SDKROOT=${SDKROOT:-$(xcrun --show-sdk-path)}
+
+            python -m pip install cmake wget
+            python scripts/install_KLU_Sundials.py
+
           CIBW_REPAIR_WHEEL_COMMAND_MACOS: delocate-listdeps {wheel} && delocate-wheel -v -w {dest_dir} {wheel}
           CIBW_TEST_COMMAND: python -c "import pybamm; pybamm.IDAKLUSolver()"
 
@@ -182,7 +209,7 @@ jobs:
         env:
           MACOSX_DEPLOYMENT_TARGET: 11.1
           CIBW_BEFORE_BUILD: python -m pip install cmake casadi setuptools wheel delocate
-          CIBW_REPAIR_WHEEL_COMMAND: delocate-listdeps {wheel} && delocate-wheel -v -w {dest_dir} {wheel}
+          CIBW_REPAIR_WHEEL_COMMAND_MACOS: delocate-listdeps {wheel} && delocate-wheel -v -w {dest_dir} {wheel}
           CIBW_TEST_COMMAND: python -c "import pybamm; pybamm.IDAKLUSolver()"
 
       - name: Upload wheels for macOS arm64