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
 74 64.10M  74 48.04M   0      0 37.19M      0   00:01   00:01         47.96M
100 64.10M 100 64.10M   0      0 42.15M      0   00:01   00:01         47.96M
100 64.10M 100 64.10M   0      0 42.15M      0   00:01   00:01         47.96M
100 64.10M 100 64.10M   0      0 42.15M      0   00:01   00:01         47.96M