anchor.diff:      meson
       ninja
       pkg-config
  -    wrapGAppsHook
  +    wrapGAppsHook4
     ];
   
     buildInputs = [
  
positive.code: , ninja
  , pkg-config
  , pulseaudio
  , wrapGAppsHook
  }:
  
  python3.pkgs.buildPythonApplication rec {
  
negative.code:   ];
  
    postPatch = ''
      substituteInPlace build-aux/meson/postinstall.py \
        --replace gtk-update-icon-cache gtk4-update-icon-cache
  
      patchShebangs build-aux/meson
    '';
  
  