Update precommit.yml

Author: jagapiou

.github/workflows/precommit.yml

@@ -49,21 +49,28 @@ jobs:
         with:
           python-version: ${{ matrix.python-version }}
 
-      - name: install infrastructure (Linux)
-        if: startsWith( matrix.cfg.os, 'ubuntu-' )
-        run: |
-          sudo apt-get install python3-dev python3-numpy python3-packaging
-          sudo ln -s /usr/lib/llvm-10/include/c++/v1 /usr/include/c++/v1
-
-      - name: install infrastructure (MacOS)
-        if: startsWith( matrix.cfg.os, 'macos-' )
-        run: sudo -H pip3 install numpy packaging
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@f677139bbe7f9c59b41e40162b753c062f5d49a3
+        with:
+          python-version: ${{ matrix.python-version }}
 
-      - name: show setup
+      - name: install python requirements
         run: |
+          brew --version || true
           bazel --version
           python --version
           pip list
+          sudo -H pip install distutils numpy packaging
+          pip list
+
+      - name: install infrastructure (Linux)
+        if: startsWith( matrix.cfg.os, 'ubuntu-' )
+        run: |
+          sudo apt-get install \
+              python${{matrix.python-version }}-dev \
+              python${{matrix.python-version }}-numpy \
+              python${{matrix.python-version }}-packaging
+          sudo ln -s /usr/lib/llvm-10/include/c++/v1 /usr/include/c++/v1
 
       # - name: build-lua5.1
       #   run: |