anchor.diff:  { lib, stdenv, fetchFromGitHub, libck, darwin }:
   
   let
  -  version = "0.30.0";
  +  version = "0.34.0";
     bootstrap = stdenv.mkDerivation {
       pname = "cyclone-bootstrap";
       inherit version;
  
positive.code:       owner = "justinethier";
        repo = "cyclone-bootstrap";
        rev = "v${version}";
        sha256 = "sha256-/zAcCBdJ7YQXsspdjrMca1Oj9SUUFXQKLwZPoZLhHYg=";
      };
  
      enableParallelBuilding = true;
  
negative.code:     owner = "justinethier";
      repo = "cyclone";
      rev = "v${version}";
      sha256 = "sha256-4U/uOTbFpPTC9BmO6Wkhy4PY8UCFVt5eHSGqrOlKT/U=";
    };
  
    enableParallelBuilding = true;
  