anchor.diff:  
     buildInputs = [ bash ];
     propagatedBuildInputs = [ boto setuptools distro ];
  -
   
     postPatch = ''
       for file in $(find google_compute_engine -type f); do
  
positive.code:     patchShebangs $out/bin/*
    '';
  
    doCheck = false;
  
    meta = with lib; {
      description = "Google Compute Engine tools and services";
  
negative.code: { lib
  , fetchFromGitHub
  , buildPythonPackage
  , bash
  , bashInteractive
  , systemd
  