... why was python part of the workflow?

.github/workflows/build.yml

@@ -7,13 +7,11 @@ jobs:
 
     steps:
       - uses: actions/checkout@master
-      - uses: actions/setup-python@master
 
       - run: |
           sudo apt-get update -qq
           sudo apt-get install -qqq luarocks
       - name: Install pre-commit
-        run: pip3 install pre-commit
 
       - name: Install LuaCheck
         run: luarocks install --local luacheck