anchor.diff:  { lib, python3Packages, fetchFromGitHub }:
   
  -with python3Packages;
  +let
  +  inherit (python3Packages) buildPythonApplication pythonOlder;
   
  +in
   buildPythonApplication rec {
     pname = "pwgen-secure";
     version = "0.9.1";
  
positive.code:     homepage = "https://github.com/mjmunger/pwgen_secure/";
      license = licenses.mit;
      maintainers = with maintainers; [ peterhoeg ];
    };
  }
  
negative.code:     sha256 = "15md5606hzy1xfhj2lxmc0nvynyrcs4vxa5jdi34kfm31rdklj28";
    };
  
    postPatch = ''
      shareDir=$out/share/${pname}
  
      substituteInPlace pwgen_secure/rpg.py \
        --replace "os.path.join(path, 'words.txt')" "os.path.join('$shareDir', 'words.txt')"
    '';
  
    propagatedBuildInputs = with python3Packages; [ docopt ];
  
    postInstall = ''
      install -Dm555 spwgen.py $out/bin/spwgen
      install -Dm444 pwgen_secure/words.txt -t $shareDir
    '';
  
    # there are no checks
  