anchor.diff:    meta = with lib; {
       description = "Switchboard Sound Plug";
       homepage = "https://github.com/elementary/switchboard-plug-sound";
  -    license = licenses.lgpl2Plus;
  +    license = licenses.lgpl21Plus;
       platforms = platforms.linux;
       maintainers = pantheon.maintainers;
     };
  
positive.code: , granite
  , gtk3
  , pulseaudio
  , libcanberra
  , libcanberra-gtk3
  , switchboard
  }:
  
  stdenv.mkDerivation rec {
    pname = "switchboard-plug-sound";
    version = "2.2.5";
  
    src = fetchFromGitHub {
      owner = "elementary";
      repo = pname;
      rev = version;
      sha256 = "sha256-ITgxLZSB4zhSaFKX7Vbf89DGI8ibIcGEQTtLjcGN2tA=";
    };
  
    passthru = {
      updateScript = nix-update-script {
  
negative.code:   buildInputs = [
      granite
      gtk3
      libcanberra-gtk3
      libgee
      pulseaudio
  