anchor.diff:  
   let
     # Use specific package versions required by paperless-ngx
  -  py = python3.override {
  +  python = python3.override {
       packageOverrides = self: super: {
         django = super.django_4;
   
  
positive.code:       --prefix PATH : "${path}"
    '';
  
    checkInputs = with py.pkgs.pythonPackages; [
      pytest-django
      pytest-env
      pytest-sugar
  
negative.code:   '';
  
    passthru = {
      inherit python;
      # PYTHONPATH of all dependencies used by the package
      pythonPath = python3.pkgs.makePythonPath propagatedBuildInputs;
      inherit path;
  