anchor.diff:  
       mkdir -p "$out/bin"
       RPATH="${ldpath}:$out/${appdir}"
  -    makeWrapper "$out/${appdir}/dropbox" "$out/bin/dropbox" \
  +    makeQtWrapper "$out/${appdir}/dropbox" "$out/bin/dropbox" \
         --prefix LD_LIBRARY_PATH : "$RPATH"
     '';
   
  
positive.code: 
    sourceRoot = ".dropbox-dist";
  
    buildInputs = [ makeWrapper patchelf ];
    dontPatchELF = true; # patchelf invoked explicitly below
    dontStrip = true; # already done
  
  
negative.code: { stdenv, fetchurl, makeDesktopItem, patchelf
  , dbus_libs, gcc, glib, libdrm, libffi, libICE, libSM
  , libX11, libXmu, ncurses, popt, qt5, zlib
  , qtbase, qtdeclarative, qtwebkit, makeQtWrapper
  }:
  
  # this package contains the daemon version of dropbox
  