structuredAttrs is enabled

trying https://github.com/nix-community/nix-index-database/releases/download/2026-10-11-092020/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
100 102.6M 100 102.6M   0      0 46.43M      0   00:02   00:02         56.50M