fix(action): install pipx

.github/workflows/test.yml

@@ -38,7 +38,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-20.04, windows-latest, macos-11]
+        os: [ubuntu-20.04, windows-latest, macos-11, macos-14]
         python_version: ['3.12']
         include:
         - os: ubuntu-22.04

action.yml

@@ -31,9 +31,25 @@ runs:
         python-version: "3.8 - 3.12"
         update-environment: false
 
+    - id: pipx
+      run: |
+        '${{ steps.python.outputs.python-path }}' -m venv --without-pip '${{ runner.temp }}/pipx4cibw'
+        '${{ steps.python.outputs.python-path }}' -m pip install --python '${{ runner.temp }}/pipx4cibw/bin/python' pipx
+        echo 'pipx-path=${{ runner.temp }}/pipx4cibw/bin/pipx' >> $GITHUB_OUTPUT
+      shell: bash
+      if: runner.os != 'Windows'
+
+    - id: pipx-win
+      run: |
+        "${{ steps.python.outputs.python-path }}" -m venv --without-pip "${{ runner.temp }}\pipx4cibw"
+        "${{ steps.python.outputs.python-path }}" -m pip install --python "${{ runner.temp }}\pipx4cibw\Scripts\python.exe" pipx
+        echo "pipx-path=${{ runner.temp }}\pipx4cibw\Scripts\pipx.exe" >> $GITHUB_OUTPUT
+      shell: pwsh
+      if: runner.os == 'Windows'
+
     # Redirecting stderr to stdout to fix interleaving issue in Actions.
     - run: >
-        pipx run
+        '${{ steps.pipx-unix.outputs.pipx-path }}' run
         --python '${{ steps.python.outputs.python-path }}'
         --spec '${{ github.action_path }}'
         cibuildwheel
@@ -47,7 +63,7 @@ runs:
 
     # Windows needs powershell to interact nicely with Meson
     - run: >
-        pipx run
+        "${{ steps.pipx-win.outputs.pipx-path }}" run
         --python "${{ steps.python.outputs.python-path }}"
         --spec "${{ github.action_path }}"
         cibuildwheel