anchor.diff:  let
     testDeps = [
       gobject-introspection # for Gio and cairo typelibs
  -    gtk3 atk pango.out gdk-pixbuf
  +    gtk3 atk pango.out gdk-pixbuf harfbuzz
     ];
   in stdenv.mkDerivation rec {
     pname = "gjs";
  
positive.code:     url = "mirror://gnome/sources/gjs/${lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
      sha256 = "1vqsmzy2wmyhmq37y2c6jl0wq4xnicf0z7k6jaxn3aw11sh783ph";
    };
  
    outputs = [ "out" "dev" "installedTests" ];
  
  
negative.code: , libxml2
  , dbus
  , gdk-pixbuf
  , harfbuzz
  , makeWrapper
  , which
  , xvfb_run
  