anchor.diff:      maintainers = [ maintainers.flexw ];
     };
   
  -  nativeBuildInputs = [ emacsPackages.emacs python ];
  +  nativeBuildInputs = [ emacsPackagesNg.emacs python ];
   }
  
positive.code:   };
  
    doCheck = true;
    buildInputs = with emacsPackages; [ s dash f ansi ecukes servant ert-runner el-mock
                                        noflet ert-async shell-split-string git package-build ];
    buildPhase = ''
      emacs --batch -L . -f batch-byte-compile cask.el cask-cli.el
    '';
  
negative.code: { stdenv, fetchurl, python, emacsPackagesNg }:
  
  stdenv.mkDerivation rec {
    name = "cask-${version}";
  