anchor.diff:      rev = "v0.12.18";
       owner  = "syncthing";
       repo   = "relaysrv";
  -    sha256 = "046vkb2nhxvcf94nqs080fsag8753ax9ibwcxnfmqn485layzhks";
  +    sha256 = "60cfbceef393ef1db126ab9d3653cad315779a745d3fc91072f4d1d356e9ef78";
       buildInputs = [ syncthing-lib du ratelimit net ];
       excludedPackages = "testutil";
     };
  
positive.code:     rev = "bf97c77db7c945cbcdbf09d56c6f87a66f54537b";
      owner = "fsouza";
      repo = "go-dockerclient";
      sha256 = "1zdjpzxm3qzbjjk7skmk7q88k2wnwj58d5mg72ps3h2857k946a8";
    };
  
    go-etcd = buildFromGitHub {
  
negative.code:     date = "2016-03-30";
      owner = "hashicorp";
      repo = "go-getter";
      sha256 = "7411e4d1cd91ed8acf8a4131d05791655b13276cbf98af8bbe3d78e984aa1906";
      buildInputs = [ aws-sdk-go ];
    };
  
  