anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "gjs";
  -  version = "1.58.5";
  +  version = "1.64.0";
   
     src = fetchurl {
       url = "mirror://gnome/sources/gjs/${stdenv.lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
  -    sha256 = "0fm1szmhdawvgbf9fh6vvkv1fdvbn888fciyi2wkhx48kz09jvg7";
  +    sha256 = "0vynivp1d10jkxfcgb5vcjkba5dvi7amkm8axmyad7l4dfy4qf36";
     };
   
     outputs = [ "out" "dev" "installedTests" ];
   
     nativeBuildInputs = [
  +    meson
  +    ninja
       pkgconfig
       makeWrapper
       libxml2 # for xml-stripblanks
  
positive.code:     gobject-introspection
      cairo
      readline
      spidermonkey_60
      dbus # for dbus-run-session
    ];
  
  
negative.code:     glib
    ];
  
    mesonFlags = [
      "-Dprofiler=disabled"
    ];
  
    postPatch = ''
  