structuredAttrs is enabled

trying https://github.com/backnotprop/plannotator/archive/refs/tags/v0.28.23.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 14.37M   0 14.37M   0      0 11.05M      0           00:01         14.36M
100 47.02M   0 47.02M   0      0 20.44M      0           00:02         23.50M
100 74.24M   0 74.24M   0      0 22.49M      0           00:03         24.73M
100 83.55M   0 83.55M   0      0 20.25M      0           00:04         24.73M
100 83.55M   0 83.55M   0      0 20.25M      0           00:04         24.73M
100 83.55M   0 83.55M   0      0 20.25M      0           00:04         24.73M
unpacking source archive /nix/var/nix/builds/nix-1981497-1450932402/download.tar.gz