structuredAttrs is enabled

trying https://github.com/backnotprop/plannotator/archive/refs/tags/v0.27.23.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 20.28M   0 20.28M   0      0 15.54M      0           00:01         20.27M
100 51.16M   0 51.16M   0      0 22.19M      0           00:02         25.56M
100 58.82M   0 58.82M   0      0 19.95M      0           00:02         25.56M
100 58.82M   0 58.82M   0      0 19.95M      0           00:02         25.56M
100 58.82M   0 58.82M   0      0 19.95M      0           00:02         25.56M
unpacking source archive /nix/var/nix/builds/nix-683972-4224450463/download.tar.gz