anchor.diff:      name = "undotree";
       src = fetchgit {
         url = "git://github.com/mbbill/undotree";
  -      rev = "6acc0aebb78aef5c3d97743c3556b73491c21446";
  -      sha256 = "";
  +      rev = "88e4a9bc2f7916f24441faf884853a01ba11d294";
  +      sha256 = "ad55b88db051f57d0c7ddc226a7b7778daab58fa67dc8ac1d78432c0e7d38520";
       };
       dependencies = [];
   
  
positive.code:     name = "Syntastic";
      src = fetchgit {
        url = "git://github.com/scrooloose/syntastic";
        rev = "b340672bd03d877ede83f95ccec6a98bbd536d42";
        sha256 = "";
      };
      dependencies = [];
  
  
negative.code:     src = fetchgit {
        url = "git://github.com/godlygeek/tabular";
        rev = "60f25648814f0695eeb6c1040d97adca93c4e0bb";
        sha256 = "28c860ad621587f2c3213fae47d1a3997746527c17d51e9ab94c209eb7bfeb0f";
      };
      dependencies = [];
  
  