anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "aisleriot";
  -  version = "3.22.20";
  +  version = "3.22.21";
   
     src = fetchFromGitLab {
       domain = "gitlab.gnome.org";
       owner = "GNOME";
       repo = pname;
       rev = version;
  -    sha256 = "sha256-5xFwlhT9qjtvNDQ8kfGd2BeK2KcJDzpfsEC8z4Ei3ns=";
  +    sha256 = "sha256-dpzuePxSoJcwUlj314r5G9A8aF1Yz49r+DxNTfA8/Ks=";
     };
   
     nativeBuildInputs = [
  
positive.code:   buildInputs = [
      gtk3
      librsvg
      guile
      libcanberra-gtk3
    ];
  
  
negative.code: , librsvg
  , libxml2
  , desktop-file-utils
  , guile_3_0
  , libcanberra-gtk3
  , ninja
  , appstream-glib
  