anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "shotwell";
  -  version = "0.30.16";
  +  version = "0.31.5";
   
     src = fetchurl {
       url = "mirror://gnome/sources/${pname}/${lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
  -    sha256 = "sha256-yYgs+9rTA8uBYbFJrLtMYX++fKn2q24i0XTiRH51GPo=";
  +    sha256 = "sha256-OwSPxs6ZsjLR4OqbjbB0CDyGyI07bWMTaiz4IXqkXBk=";
     };
   
     nativeBuildInputs = [
  
positive.code: , libexif
  , libgphoto2
  , libwebp
  , libsoup
  , libxml2
  , vala
  , sqlite
  , webkitgtk
  , pkg-config
  , gnome
  , gst_all_1
  
negative.code:     librest
      gcr
      gnome.adwaita-icon-theme
      libchamplain
      libsecret
    ];
  