structuredAttrs is enabled

trying https://github.com/nix-community/nix-index-database/releases/download/2026-08-16-033510/index-x86_64-linux
  % Total    % Received % Xferd  Average Speed  Time    Time    Time   Current
                                 Dload  Upload  Total   Spent   Left   Speed
  0      0   0      0   0      0      0      0                              0
100 97.83M 100 97.83M   0      0 25.79M      0   00:03   00:03         25.67M