anchor.diff:        characteristic
       ];
   
  -  postInstall = "wrapProgram $out/bin/nox --prefix PATH : ${nix}/bin";
  -
     meta = {
       homepage = https://github.com/madjar/nox;
       description = "Tools to make nix nicer to use";
  
positive.code: { lib, pythonPackages, fetchurl, makeWrapper, nix }:
  
  pythonPackages.buildPythonPackage rec {
    name = "nox-${version}";
  
negative.code:     sha256 = "1s1jhickdhym70qrb5h4qxq1mvkpwgdppqpfb2jnpfaf1az6c207";
    };
  
    buildInputs = [ pythonPackages.pbr ];
  
    pythonPath = with pythonPackages; [
        dogpile_cache
  