anchor.diff:  , pkg-config
   , vala
   , libgee
  +, libhandy
   , granite
   , gtk3
   , switchboard
  
positive.code:     granite
      gtk3
      libgee
      switchboard
    ];
  
  
negative.code: 
  stdenv.mkDerivation rec {
    pname = "switchboard-plug-display";
    version = "2.3.2";
  
    src = fetchFromGitHub {
      owner = "elementary";
      repo = pname;
      rev = version;
      sha256 = "sha256-3sYZCazGnTjIi3Iry5673TMI13sD0GuY+46AK+NJH70=";
    };
  
    passthru = {
  