anchor.diff:  { lib, stdenv
   , substituteAll
   , fetchFromGitHub
  +, fetchpatch
   , nix-update-script
   , pantheon
   , meson
  
positive.code: , granite
  , gtk3
  , switchboard
  , onboard
  }:
  
  stdenv.mkDerivation rec {
    pname = "switchboard-plug-a11y";
    version = "2.2.0";
  
    src = fetchFromGitHub {
      owner = "elementary";
      repo = pname;
      rev = version;
      sha256 = "sha256-3PaOIadlEdYvfNZJaoAQVDKdSTfUdn+snCa8tHmDFD0=";
    };
  
    patches = [
      (substituteAll {
        src = ./fix-paths.patch;
        inherit onboard;
      })
    ];
  
  
negative.code:     gtk3
      libgee
      switchboard
      wingpanel-indicator-a11y
    ];
  
    meta = with lib; {
      description = "Switchboard Universal Access Plug";
      homepage = "https://github.com/elementary/switchboard-plug-a11y";
      license = licenses.gpl3Plus;
      platforms = platforms.linux;
      maintainers = pantheon.maintainers;
    };
  