final: prev: {
  smayzy-freecad-x11-fix = prev.stdenv.mkDerivation {
    name = "smayzy-freecad-x11-fix";
    buildInputs = [ prev.makeWrapper ];
    installPhase = ''
      mkdir -p $out/bin
      wrapProgram ${prev.freecad}/bin/FreeCAD \
        --set QT_QPA_PLATFORM xcb \
        --prefix PATH : ${prev.stdenv.cc.cc}/bin
    '';
  };
}