structuredAttrs is enabled

trying https://github.com/sipyourdrink-ltd/bernstein/archive/refs/tags/v3.17.2.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 10.51M   0 10.51M   0      0  8.61M      0           00:01         10.42M
100 18.25M   0 18.25M   0      0  8.22M      0           00:02          9.08M
100 22.88M   0 22.88M   0      0  8.32M      0           00:02          9.08M
100 22.88M   0 22.88M   0      0  8.32M      0           00:02          9.08M
100 22.88M   0 22.88M   0      0  8.32M      0           00:02          9.08M
unpacking source archive /nix/var/nix/builds/nix-5795-1358147129/download.tar.gz