anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "megacmd";
  -  version = "1.2.0";
  +  version = "1.4.0";
   
     src = fetchFromGitHub {
       owner = "meganz";
       repo = "MEGAcmd";
       rev = "${version}_Linux";
  -    sha256 = "0czyhsms0a0237d6h9b21n9p4nm4zkjanhhbvw26k6266g6c1nyr";
  +    sha256 = "sha256-Q1SZSDTPGgBA/W/ZVYfTQsiP41RE1LJ+esQ3PK9EjIc=";
       fetchSubmodules = true;
     };
   
  
positive.code: 
    meta = with lib; {
      description = "MEGA Command Line Interactive and Scriptable Application";
      homepage    = "https://mega.nz/";
      license     = licenses.unfree;
      platforms   = [ "i686-linux" "x86_64-linux" ];
      maintainers = [ maintainers.wedens ];
    };
  }
  
negative.code: { lib
  , stdenv
  , autoconf
  , automake
  , c-ares
  , cryptopp
  , curl
  , fetchFromGitHub
  , ffmpeg_3 # build fails with latest ffmpeg, see https://github.com/meganz/MEGAcmd/issues/523
  , freeimage
  , gcc-unwrapped
  , libmediainfo
  