anchor.diff: -{ lib, buildPythonApplication, fetchPypi, matplotlib, numpy, pymavlink, pyserial
  -, setuptools, wxPython_4_0 }:
  +{ stdenv, lib, buildPythonApplication, fetchPypi, matplotlib, numpy, pymavlink, pyserial
  +, setuptools, wxPython_4_0, billiard, gnureadline }:
   
   buildPythonApplication rec {
     pname = "MAVProxy";
  
positive.code:     sha256 = "fe046481b793b592334749249620fce8a463f4c46b394ff744645975465d677b";
    };
  
    propagatedBuildInputs = [
      matplotlib
      numpy
  
negative.code:     pyserial
      setuptools
      wxPython_4_0
    ] ++ lib.optionals stdenv.isDarwin [ billiard gnureadline ];
  
    # No tests
    doCheck = false;
  