anchor.diff:  , fetchFromGitHub
   , meson
   , ninja
  -, pkgconfig
  +, pkg-config
  +, gtk-doc
  +, docbook-xsl-nons
  +, docbook_xml_dtd_43
   , wayland
   , gtk3
   , gobject-introspection
  
positive.code:   };
  
    nativeBuildInputs = [
      meson ninja pkgconfig
    ];
  
    buildInputs = [
      wayland gtk3 gobject-introspection
    ];
  
    mesonFlags = [
      "-Dout=${placeholder "out"}"
    ];
  
    meta = with stdenv.lib; {
  
negative.code:   pname = "gtk-layer-shell";
    version = "0.2.0";
  
    outputs = [ "out" "dev" "devdoc" ];
  
    src = fetchFromGitHub {
      owner = "wmww";
      repo = "gtk-layer-shell";
  