structuredAttrs is enabled

trying https://github.com/kunchenguid/treehouse/archive/refs/tags/v3.1.4.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
100 737.5k   0 737.5k   0      0 750.1k      0                              0
100 737.5k   0 737.5k   0      0 750.1k      0                              0
100 737.5k   0 737.5k   0      0 750.1k      0                              0
unpacking source archive /nix/var/nix/builds/nix-1214341-280674118/download.tar.gz