Use --break-system-packages with pip on MacOS

Author: aegilops

action.yml

@@ -64,6 +64,7 @@ runs:
     - name: Checkout code
       uses: actions/checkout@v4
     - name: Set up Python
+      id: setup-python
       uses: actions/setup-python@v4
       with:
         python-version: ${{ inputs.python-version }}
@@ -131,6 +132,11 @@ runs:
             fi
           fi
 
+          # deal with HomeBrew managed Python on GitHub Hosted MacOS runners
+          if [[ "${RUNNER_OS}" == "macOS" ]]; then
+            EXTRA_PIP_FLAGS="${EXTRA_PIP_FLAGS} --break-system-packages"
+          fi
+
           echo "::debug::Installing ${INPUTS_LINTER}${LINTER_VERSION_CONSTRAINT} for Python ${INPUTS_PYTHON_VERSION}"
 
           # install linter