structuredAttrs is enabled

trying https://github.com/sipyourdrink-ltd/bernstein/archive/refs/tags/v3.16.0.tar.gz
  % 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
100 10.33M   0 10.33M   0      0  8.70M      0           00:01         10.32M
100 17.00M   0 17.00M   0      0  7.70M      0           00:02          8.41M
100 22.38M   0 22.38M   0      0  7.66M      0           00:02          8.41M
100 22.38M   0 22.38M   0      0  7.66M      0           00:02          8.41M
100 22.38M   0 22.38M   0      0  7.66M      0           00:02          8.41M
unpacking source archive /nix/var/nix/builds/nix-10199-671736225/download.tar.gz