anchor.diff:      owner = "GNOME";
       repo = "libadwaita";
       rev = version;
  -    hash = "sha256-D7Qq8yAWkr/G5I4k8G1+viJkEJSrCBAg31Q+g3U9FcQ=";
  +    hash = "sha256-D1hJMidnGtCC+6gz6lqp+qL+9UVzIRL7IjGptwk/X+M=";
     };
   
     nativeBuildInputs = [
  
positive.code:     mv $out/share/{doc,gtk-doc}
    '';
  
    meta = with lib; {
      description = "Library to help with developing UI for mobile devices using GTK/GNOME";
      homepage = "https://gitlab.gnome.org/GNOME/libadwaita";
  
negative.code: 
  stdenv.mkDerivation rec {
    pname = "libadwaita";
    version = "1.1.beta";
  
    outputs = [ "out" "dev" "devdoc" ];
    outputBin = "devdoc"; # demo app
  