anchor.diff:  
   buildGoPackage rec {
     name = "go-ethereum-${version}";
  -  version = "1.6.7";
  +  version = "1.7.0";
     goPackagePath = "github.com/ethereum/go-ethereum";
   
     # Fixes Cgo related build failures (see https://github.com/NixOS/nixpkgs/issues/25959 )
  
positive.code:     owner = "ethereum";
      repo = "go-ethereum";
      rev = "v${version}";
      sha256 = "19cq0pmif4y33v34jzvam4mcszl8vf2saf2gzfz01l4x1iv4hf1r";
    };
  
    # Fix cyclic referencing on Darwin
  
negative.code:     done
    '';
  
    meta = with stdenv.lib; {
      homepage = https://ethereum.github.io/go-ethereum/;
      description = "Official golang implementation of the Ethereum protocol";
      license = with licenses; [ lgpl3 gpl3 ];
      maintainers = [ maintainers.adisbladis ];
    };
  }
  