anchor.diff: -{ stdenv, fetchurl, emacs, python }:
  +{ stdenv, fetchurl, python, emacsPackages }:
   
   stdenv.mkDerivation rec {
     name = "cask-${version}";
  
positive.code:   };
  
    doCheck = true;
  
    dontBuild = true;
  
    installPhase = ''
      mkdir -p $out/bin
      mkdir -p $out/templates
      install -Dm644 *.el $out/
      install -Dm755 bin/cask $out/bin
      install -Dm644 templates/* $out/templates/
      touch $out/.no-upgrade
      mkdir -p $out/usr/share/emacs/site-lisp/cask
      ln -s cask{,-bootstrap}.el $out/usr/share/emacs/site-lisp/cask/
    '';
  
    meta = with stdenv.lib; {
  
negative.code:     maintainers = [ maintainers.flexw ];
    };
  
    nativeBuildInputs = [ emacsPackages.emacs python ];
  }
  