anchor.diff:      ];
     };
   
  +  bleve = buildFromGitHub {
  +    rev    = "fc34a97875840b2ae24517e7d746b69bdae9be90";
  +    date   = "2016-01-19";
  +    owner  = "blevesearch";
  +    repo   = "bleve";
  +    sha256 = "0ny7nvilrxmmzcdvpivwyrjkynnhc22c5gdrxzs421jly35jw8jx";
  +    buildFlags = [ "-tags all" ];
  +    propagatedBuildInputs = [ protobuf goleveldb kagome gtreap bolt text
  +     rcrowley.go-metrics bitset segment go-porterstemmer ];
  +  };
  +
     binarydist = buildFromGitHub {
       rev    = "9955b0ab8708602d411341e55fffd7e0700f86bd";
       owner  = "kr";
       repo   = "binarydist";
       sha256 = "11wncbbbrdcxl5ff3h6w8vqfg4bxsf8709mh6vda0cv236flkyn3";
  +  };
  +
  +  bitset = buildFromGitHub {
  +    rev    = "bb0da3785c4fe9d26f6029c77c8fce2aa4d0b291";
  +    date   = "2016-01-13";
  +    owner  = "willf";
  +    repo   = "bitset";
  +    sha256 = "1d4z2hjjs9jk6aysi4mf50p8lbbzag4ir4y1f0z4sz8gkwagh7b7";
     };
   
     blackfriday = buildFromGitHub {
  
positive.code:     owner = "cihub";
      repo = "seelog";
      sha256 = "1f0rwgqlffv1a7b05736a4gf4l9dn80wsfyqcnz6qd2skhwnzv29";
    };
  
    semver = buildFromGitHub {
  
negative.code:     owner  = "mreiferson";
      repo   = "go-options";
      sha256 = "0ksyi2cb4k6r2fxamljg42qbz5hdcb9kv5i7y6cx4ajjy0xznwgm";
    };
  
    go-porterstemmer = buildFromGitHub {
      rev    = "23a2c8e5cf1f380f27722c6d2ae8896431dc7d0e";
      date   = "2014-12-30";
      owner  = "blevesearch";
      repo   = "go-porterstemmer";
      sha256 = "0rcfbrad79xd114h3dhy5d3zs3b5bcgqwm3h5ih1lk69zr9wi91d";
    };
  
    go-querystring = buildFromGitHub {
  