anchor.diff:      propagatedBuildInputs = [
         net
       ];
  +    date = "2017-05-29";
     };
   
     go-stun = buildFromGitHub {
  
positive.code: 
    go-ethereum = buildFromGitHub {
      version = 3;
      date = "2017-05-26";
      rev = "cb809c03da18bf45f961a931dfd4c765de144e66";
      owner  = "ethereum";
      repo   = "go-ethereum";
      sha256 = "08pzqrpgf1ycls8885imdfz5whv6q4s6czndzcvvy6f74cdn392i";
      subPackages = [
        "crypto/sha3"
      ];
  
negative.code: 
    docker_cli = buildFromGitHub {
      version = 3;
      date = "2017-05-30";
      rev = "f3cb13c5505d73928f45faba58edda72e4f3bbcc";
      owner = "docker";
      repo = "cli";
      sha256 = "075m8s8yrwnxg208y0d7pzw22gpfhr4wms7fmag424996qziqnyy";
      subPackages = [
        "cli/config/configfile"
      ];
  