structuredAttrs is enabled

trying https://github.com/nix-community/nix-index-database/releases/download/2026-09-20-075601/index-aarch64-darwin
  % Total    % Received % Xferd  Average Speed  Time    Time    Time   Current
                                 Dload  Upload  Total   Spent   Left   Speed

  0      0   0      0   0      0      0      0                              0
  0      0   0      0   0      0      0      0                              0
  0      0   0      0   0      0      0      0                              0

  0      0   0      0   0      0      0      0                              0
 78 64.10M  78 50.01M   0      0 38.42M      0   00:01   00:01         46.58M
100 64.10M 100 64.10M   0      0 39.61M      0   00:01   00:01         46.58M
100 64.10M 100 64.10M   0      0 39.61M      0   00:01   00:01         46.58M
100 64.10M 100 64.10M   0      0 39.61M      0   00:01   00:01         46.58M