anchor.diff:  
     free = stdenv.mkDerivation {
       name = "clementine-free-${version}";
  -    inherit patches src buildInputs;
  +    inherit src patches nativeBuildInputs buildInputs;
  +
  +    cmakeFlags = [ "-DUSE_SYSTEM_PROJECTM=ON" ];
  +
       enableParallelBuilding = true;
       postPatch = ''
         sed -i src/CMakeLists.txt \
  
positive.code:     ./clementine-spotify-blob-remove-from-build.patch
    ];
  
    buildInputs = [
      boost
      cmake
      chromaprint
      fftw
      gettext
  
negative.code: { stdenv, fetchurl, boost, cmake, chromaprint, gettext, gst_all_1, liblastfm
  , qt4, taglib, fftw, glew, qjson, sqlite, libgpod, libplist, usbmuxd, libmtp
  , libpulseaudio, gvfs, libcdio, libechonest, libspotify, pcre, projectm, protobuf
  , qca2, pkgconfig, sparsehash, config, makeWrapper, runCommand, gst_plugins }:
  
  let
  