structuredAttrs is enabled

trying https://github.com/kunchenguid/treehouse/archive/refs/tags/v3.1.2.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
100 734.7k   0 734.7k   0      0  1.04M      0                              0
100 734.7k   0 734.7k   0      0  1.04M      0                              0
100 734.7k   0 734.7k   0      0  1.04M      0                              0
unpacking source archive /nix/var/nix/builds/nix-2113402-3811186292/download.tar.gz