anchor.diff:  
     ipfs = buildFromGitHub {
       version = 2;
  -    date = "2016-09-13";
  -    rev = "85da76a4eea9098d5874c168c728591d1d2f58a1";
  +    date = "2016-09-19";
  +    rev = "e10453b67bb8e683082ebde345d0080f05aeca12";
       owner = "ipfs";
       repo = "go-ipfs";
  -    sha256 = "aac7c76ce3be455df629b742d3feb22446cd8c4471e1db24cc5389b7f496a2f6";
  -    gxSha256 = "1fih2cinl47dd5x9mwb1igr7l26ag5la3csm3whbc3rndsxfmv2y";
  +    sha256 = "38f48703cf43eda32c4071ea29546d0e746064b41ab08f1037bae867cf46edc7";
  +    gxSha256 = "04ak7xgchnrxcyw1cih2xvix73j13f0zrh425l1cv2sycjdn0n9q";
       subPackages = [
         "cmd/ipfs"
         "cmd/ipfswatch"
  
positive.code: 
    go-multiaddr-net = buildFromGitHub {
      version = 2;
      rev = "825144c9a253d8f75fcaced0ac16181d8b384b22";
      owner  = "multiformats";
      repo   = "go-multiaddr-net";
      sha256 = "08xrslkxvp5m6birf748k1jkpn2qirgmk1nldm313hjksiwq24df";
      date = "2016-09-15";
      goPackageAliases = [ "github.com/jbenet/go-multiaddr-net" ];
      propagatedBuildInputs = [
        go-multiaddr
  
negative.code: 
    text = buildFromGitHub {
      version = 2;
      rev = "2df9074612f50810d82416d2229398a1e7188c5c";
      date = "2016-09-15";
      owner = "golang";
      repo = "text";
      sha256 = "0iw4ck14mhdll6l825nw1dp6jcbr2ccy3x3zpp2zkk433gx90iml";
      goPackagePath = "golang.org/x/text";
      goPackageAliases = [ "github.com/golang/text" ];
    };
  