structuredAttrs is enabled

trying https://github.com/sipyourdrink-ltd/bernstein/archive/refs/tags/v3.17.0.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  9.76M   0  9.76M   0      0  8.35M      0           00:01          9.76M
100 17.01M   0 17.01M   0      0  7.75M      0           00:02          8.39M
100 22.77M   0 22.77M   0      0  7.76M      0           00:02          8.39M
100 22.77M   0 22.77M   0      0  7.76M      0           00:02          8.39M
100 22.77M   0 22.77M   0      0  7.76M      0           00:02          8.39M
unpacking source archive /nix/var/nix/builds/nix-19984-3703232028/download.tar.gz