anchor.diff:      url    = "https://github.com/trezor/trezord";
       rev    = "refs/tags/v${version}";
       sha256 = "1iaxmwyidjdcrc6jg0859v6v5x3qnz5b0p78pq0bypvmgyijhpm4";
  +  };
  +
  +  common = fetchFromGitHub {
  +    owner = "trezor";
  +    repo = "trezor-common";
  +    rev = "b55fb61218431e9c99c9d6c1673801902fc9e92e";
  +    sha256 = "1zanbgz1qjs8wfwp0z91sqcvj77a9iis694k415jyd2dn4riqhdg";
     };
   
     meta = with stdenv.lib; {
  
positive.code:     jsoncpp
    ];
  
    LD_LIBRARY_PATH = "${stdenv.lib.makeLibraryPath [ curl ]}";
    cmakeFlags="-DJSONCPP_LIBRARY='${jsoncpp}/lib/libjsoncpp.so'";
  
    installPhase = ''
      mkdir -p $out/bin
  
negative.code: { stdenv, fetchgit, fetchFromGitHub, curl, cmake, boost, gcc, protobuf, pkgconfig, jsoncpp
  , libusb1, libmicrohttpd
  }:
  
  