anchor.diff:    };
   
     grpc = buildFromGitHub {
  -    version = 2;
  -    date = "2017-04-25";
  -    rev = "c73e0165df8e5495c523feb93a8a6c19b9452817";
  +    version = 3;
  +    date = "2017-04-27";
  +    rev = "277e90a4321cba6ad9f9ca4a832165265002c3a5";
       owner = "grpc";
       repo = "grpc-go";
  -    sha256 = "00fy1s4n2k08hgvin07718pn39ln87j139igyi760s9w0ir4c5im";
  +    sha256 = "18x55b85w5v05h3772b9ls630dcwhz7kksgdh78zhm70axan06dx";
       goPackagePath = "google.golang.org/grpc";
       goPackageAliases = [
         "github.com/grpc/grpc-go"
  
positive.code:   };
  
    datadog-go = buildFromGitHub {
      version = 2;
      rev = "98d6bb1dd32dc3e96d9172b89b92fcbc912e5fae";
      owner = "DataDog";
      repo = "datadog-go";
      sha256 = "1kjpm2zq3z41wd0rr9lznq07vvnb0ir7sqv5mgi0qpmb5d4ycqs2";
      date = "2017-04-21";
    };
  
    dbus = buildFromGitHub {
  
negative.code:   };
  
    cobra = buildFromGitHub {
      version = 3;
      owner = "spf13";
      repo = "cobra";
      rev = "7b1b6e8dc027253d45fc029bc269d1c019f83a34";
      date = "2017-04-27";
      sha256 = "0wnpnc1m879ds092fimlpa0h45snqv4dshb9037g302q18nz2425";
      buildInputs = [
        mousetrap
        pflag
  