anchor.diff:  
     haskell-mode = melpaBuild rec {
       pname   = "haskell-mode";
  -    version = "13.14";
  +    version = "13.16";
       src = fetchFromGitHub {
         owner  = "haskell";
         repo   = pname;
         rev    = "v${version}";
  -      sha256 = "1mxr2cflgafcr8wkvgbq8l3wmc9qhhb7bn9zl1bkf10zspw9m58z";
  +      sha256 = "1gmpmfkr54sfzrif87zf92a1i13wx75bhp66h1rxhflg216m62yv";
       };
       meta = {
         description = "Haskell language support for Emacs";
  
positive.code:     };
    };
  
    hi2 = melpaBuild rec {
      pname   = "hi2";
      version = "1.0";
  
negative.code: 
    smartparens = melpaBuild rec {
      pname   = "smartparens";
      version = "20151025";
      src = fetchFromGitHub {
        owner  = "Fuco1";
        repo   = pname;
        rev    = "85583f9570be58f17ccd68388d9d4e58234d8ae9";
        sha256 = "1pvzcrnzvksx1rzrr19256x1qhidr2acz6yipijlfx2zfjx2gxa7";
      };
      packageRequires = [ dash ];
      meta = {
  