Update precommit.yml

Author: jagapiou

.github/workflows/precommit.yml

@@ -25,6 +25,10 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
+        bazel_version:
+          - '6.3.0'
+        python_version:
+          - '3.10'
         include:
           - { name: 'Linux GCC', os: 'ubuntu-22.04', cc: gcc-12, cxx: g++-12, config: }
           - { name: 'Linux LLVM+libstdc++', os: 'ubuntu-22.04', cc: clang, cxx: clang++, config: --linkopt=-fuse-ld=lld }
@@ -35,11 +39,15 @@ jobs:
     env:
       CC:  ${{ matrix.cc }}
       CXX: ${{ matrix.cxx }}
-      USE_BAZEL_VERSION: '6.3.0'
-      PYTHON_VERSION: '3.10'
+      USE_BAZEL_VERSION: ${{ matrix.bazel_version }}
 
     steps:
       - uses: actions/checkout@v3
+      
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@f677139bbe7f9c59b41e40162b753c062f5d49a3
+        with:
+          python-version: ${{ matrix.python_version }}
 
       - name: install infrastructure (Linux)
         if: startsWith( matrix.os, 'ubuntu-' )
@@ -51,10 +59,11 @@ jobs:
         if: startsWith( matrix.os, 'macos-' )
         run: sudo -H pip3 install numpy packaging
 
-      - name: show bazel setup
+      - name: show setup
         run: |
           bazel --version
-          python3 --version
+          python --version
+          pip list
 
       # - name: build-lua5.1
       #   run: |