anchor.diff:  
     meta = with stdenv.lib; {
       description = "A simple GObject game controller library";
  -    homepage = https://wiki.gnome.org/Apps/Builder;
  +    homepage = "https://gitlab.gnome.org/aplazas/libmanette";
       license = licenses.lgpl21Plus;
       maintainers = gnome3.maintainers;
       platforms = platforms.unix;
  
positive.code: { stdenv, fetchurl, ninja, meson, pkgconfig, vala, gobject-introspection
  , glib, libgudev, libevdev, gnome3 }:
  
  let
    version = "0.2.3";
    pname = "libmanette";
  in
  stdenv.mkDerivation {
    name = "${pname}-${version}";
  
    outputs = [ "out" "dev" ];
  
  
negative.code:     sha256 = "1zxh7jn2zg7hivmal5zxam6fxvjsd1w6hlw0m2kysk76b8anbw60";
    };
  
    nativeBuildInputs = [
      meson
      ninja
      pkgconfig
      vala
      gobject-introspection
    ];
  
    buildInputs = [
      glib
      libgudev
      libevdev
    ];
  
    doCheck = true;
  
  