anchor.diff:    };
   
     crypto = buildFromGitHub {
  -    rev = "285fb2ed20d1dc450fc743a1b3ff7c36bef372b9";
  -    date = "2016-04-26";
  +    rev = "019870fc9d457ee8abd13a2e93e3f2a3b55b7119";
  +    date = "2016-05-04";
       owner    = "golang";
       repo     = "crypto";
  -    sha256 = "0z983nnzq9032j25xii52b0bz6qj6jl444qswz6alk3gh448m6qa";
  +    sha256 = "04ycvrrqm2z9j00aazkrxkav5gqhaw04rz7khzk7l1navn3cjjf8";
       goPackagePath = "golang.org/x/crypto";
       goPackageAliases = [
         "code.google.com/p/go.crypto"
  
positive.code:   };
  
    go-base58 = buildFromGitHub {
      rev = "0.0.0";
      owner  = "jbenet";
      repo   = "go-base58";
      sha256 = "0pqmk0q9zir6nymdffn77ngzc9npwjd3sbdkdab75bv37h0ijk6a";
      date = "2015-03-17";
    };
  
  
negative.code:   };
  
    go-ipfs-api = buildFromGitHub {
      date = "2016-04-27";
      rev = "60ded1996d84cc0c5607e7e32b8138cc91cb4b18";
      owner  = "ipfs";
      repo   = "go-ipfs-api";
      sha256 = "0nhjwf56vsdxay4bjv4f09k9k847i9gbm1bxklr37hf5srpmqbgr";
      excludedPackages = "tests";
      propagatedBuildInputs = [ go-multiaddr-net go-multipart-files tar-utils ];
    };
  