anchor.diff:      yelp-tools
       appstream
       wrapGAppsHook
  +    python3
     ];
   
     buildInputs = [
  
positive.code: { fetchurl
  , stdenv
  , autoreconfHook
  , pkgconfig
  , gettext
  , libxml2
  
negative.code:     librsvg
      adwaita-icon-theme
      gspell
      gnome-desktop
      dbus # only needed to find the service directory
      texlive.bin.core # kpathsea for DVI support
      t1lib
    ] ++ stdenv.lib.optional supportXPS libgxps
      ++ stdenv.lib.optionals supportMultimedia (with gst_all_1; [
        gstreamer gst-plugins-base gst-plugins-good gst-plugins-bad gst-plugins-ugly gst-libav ]);
  
    mesonFlags = [
      "-Dauto_features=enabled"
      "-Dnautilus=false"
      "-Dps=enabled"
      "-Dgtk_doc=false"
    ];
  
    NIX_CFLAGS_COMPILE = "-I${glib.dev}/include/gio-unix-2.0";
  