… while calling the 'throw' builtin
         at /var/lib/ofborg/checkout/repo/38dca4e3aa6bca43ea96d2fcc04e8229/builder/ofborg-core/pkgs/top-level/aliases.nix:847:14:
          846|   gtkcord4 = dissent; # Added 2024-03-10
          847|   gtkextra = throw "'gtkextra' has been removed due to lack of maintenance upstream."; # Added 2025-06-10
             |              ^
          848|   gtkperf = throw "'gtkperf' has been removed due to lack of maintenance upstream"; # Added 2024-09-14

       error: 'gtkextra' has been removed due to lack of maintenance upstream.