structuredAttrs is enabled

trying https://github.com/sameerdhoot/wolweb/archive/b66c4fb15f464d9f80fe286c004c53a3cad11807.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
100 639.5k   0 639.5k   0      0 621.0k      0           00:01              0
100 639.5k   0 639.5k   0      0 620.8k      0           00:01              0
100 639.5k   0 639.5k   0      0 620.7k      0           00:01              0
unpacking source archive /nix/var/nix/builds/nix-23154-3890565483/download.tar.gz