anchor.diff:  { lib
   , stdenv
   , fetchFromGitHub
  -, fetchpatch
   , buildPythonPackage
   , pytestCheckHook
   , sysctl
  
positive.code:       --replace "_run_and_get_stdout(['sysctl'" "_run_and_get_stdout(['${sysctl}/bin/sysctl'"
    '';
  
    meta = {
      description = "Get CPU info with pure Python 2 & 3";
      longDescription = ''
        Py-cpuinfo gets CPU info with pure Python and should work without any
        extra programs or libraries, beyond what your OS provides. It does not
        require any compilation (C/C++, assembly, etc.) to use and works with
        Python 2 and 3.
      '';
      inherit (src.meta) homepage;
      changelog = "https://github.com/workhorsy/py-cpuinfo/blob/v${version}/ChangeLog";
      license = lib.licenses.mit;
      maintainers = with lib.maintainers; [ costrouc ];
    };
  }
  
negative.code: 
  buildPythonPackage rec {
    pname = "py-cpuinfo";
    version = "8.0.0";
  
    src = fetchFromGitHub {
       owner = "workhorsy";
       repo = pname;
       rev = "v${version}";
       sha256 = "sha256-Mgzj1HTasUNHeHMVwV6d+TeyVqnBNUwCJ1EC3kfovf8=";
    };
  
    checkInputs = [
      pytestCheckHook
  