anchor.diff:    '';
   
     cmakeFlags = [ "-DCMAKE_BUILD_TYPE=Release" "-DSFIZZ_TESTS=ON" ];
  +
  +  doCheck = true;
   
     meta = with lib; {
       homepage = "https://github.com/sfztools/sfizz";
  
positive.code:   nativeBuildInputs = [ cmake pkg-config ];
  
    postPatch = ''
      substituteInPlace plugins/editor/external/vstgui4/vstgui/lib/platform/linux/x11fileselector.cpp \
        --replace 'zenitypath = "zenity"' 'zenitypath = "${gnome.zenity}/bin/zenity"'
      substituteInPlace plugins/editor/src/editor/NativeHelpers.cpp \
  
negative.code: { lib, stdenv, fetchFromGitHub, libjack2, libsndfile, xorg, freetype
  , libxkbcommon, cairo, glib, gnome, flac, libogg, libvorbis, libopus, cmake
  , pango, pkg-config, catch2
  }:
  
  stdenv.mkDerivation rec {
    pname = "sfizz";
  