structuredAttrs is enabled

trying https://github.com/Mic92/nix-1/commit/db9b1a345c55e04c041bb12ab2eb58b0a368b3eb.patch
  % Total    % Received % Xferd  Average Speed  Time    Time    Time   Current
                                 Dload  Upload  Total   Spent   Left   Speed
100   2930 100   2930   0      0  10065      0                              0