anchor.diff:    };
   
     unstable = fetchurl rec {
  -    version = "1.9.16";
  +    version = "1.9.18";
       url = "mirror://sourceforge/wine/wine-${version}.tar.bz2";
  -    sha256 = "010gjib4nhrn9j9q12v5irda8df8xp17a6v6qqskkadd79kxc871";
  +    sha256 = "1n38697v707j489ljd6b2k1yvrarflc0yn847jas1ida1nm4nq96";
       inherit (stable) mono;
       gecko32 = fetchurl rec {
         version = "2.44";
  
positive.code: 
    staging = fetchFromGitHub rec {
      inherit (unstable) version;
      sha256 = "0rcy0i36jxv2akczd4sfrdmlsqxmj5v0wzvqb3xl8p2mldk9i8yl";
      owner = "wine-compholio";
      repo = "wine-staging";
      rev = "v${version}";
  
negative.code: in rec {
  
    stable = fetchurl rec {
      version = "1.8.4";
      url = "mirror://sourceforge/wine/wine-${version}.tar.bz2";
      sha256 = "0yahh1n3s3y0bp1a1sr3zpna56749jdgr85hwmpq393pjx1i0pai";
  
      ## see http://wiki.winehq.org/Gecko
      gecko32 = fetchurl rec {
  