anchor.diff: -{ fetchurl, lib, stdenv, pkg-config, meson, ninja
  -, gobject-introspection, clutter, gtk3, gnome }:
  +{ fetchurl
  +, lib
  +, stdenv
  +, pkg-config
  +, meson
  +, ninja
  +, gobject-introspection
  +, clutter
  +, gtk3
  +, gnome
  +}:
   
   let
     pname = "clutter-gtk";
  
positive.code:   propagatedBuildInputs = [ clutter gtk3 ];
    nativeBuildInputs = [ meson ninja pkg-config gobject-introspection ];
  
    postBuild = "rm -rf $out/share/gtk-doc";
  
    passthru = {
  
negative.code:     homepage = "http://www.clutter-project.org/";
      license = lib.licenses.lgpl2Plus;
      maintainers = with lib.maintainers; [ ];
      platforms = lib.platforms.unix;
    };
  }
  