anchor.diff:        separately.
   
         This is "Mac port" addition to GNU Emacs 24. This provides a native
  -      GUI support for Mac OS X 10.4 - 10.9. Note that Emacs 23 and later
  +      GUI support for Mac OS X 10.4 - 10.11. Note that Emacs 23 and later
         already contain the official GUI support via the NS (Cocoa) port for
         Mac OS X 10.4 and later. So if it is good enough for you, then you
         don't need to try this.
  
positive.code: 
  stdenv.mkDerivation rec {
    emacsName = "emacs-24.5";
    name = "${emacsName}-mac-5.11";
  
    #builder = ./builder.sh;
  
  
negative.code: 
    macportSrc = fetchurl {
      url = "ftp://ftp.math.s.chiba-u.ac.jp/emacs/${name}.tar.gz";
      sha256 = "1kryg4xw2jn2jwd9ilm2snjvgmnbbp392ry1skzl4d4xf7ff3vx1";
    };
  
    enableParallelBuilding = true;
  