anchor.diff:      owner  = "jbenet";
       repo   = "go-base58";
       sha256 = "0sbss2611iri3mclcz3k9b7kw2sqgwswg4yxzs02vjk3673dcbh2";
  -  };
  -
  -  go-bencode = buildGoPackage rec {
  -    version = "1.1.1";
  -    name = "go-bencode-${version}";
  -    goPackagePath = "github.com/ehmry/go-bencode";
  -
  -    src = fetchurl {
  -      url = "https://${goPackagePath}/archive/v${version}.tar.gz";
  -      sha256 = "0y2kz2sg1f7mh6vn70kga5d0qhp04n01pf1w7k6s8j2nm62h24j6";
  -    };
     };
   
     go-bindata-assetfs = buildFromGitHub {
  
positive.code:     owner = "gorilla";
      repo = "mux";
      sha256 = "1iicj9v3ippji2i1jf2g0jmrvql1k2yydybim3hsb0jashnq7794";
      propagatedBuildInputs = [ context ];
    };
  
    muxado = buildFromGitHub {
  
negative.code:     date = "2016-08-18";
    };
  
    gojsonpointer = buildFromGitHub {
      rev = "e0fe6f68307607d540ed8eac07a342c33fa1b54a";
      owner  = "xeipuuv";
  