structuredAttrs is enabled

trying https://github.com/ctxrs/ctx/archive/refs/tags/v2.1.1.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  4.75M   0  4.75M   0      0  3.92M      0           00:01          4.68M
100  9.99M   0  9.99M   0      0  5.85M      0           00:01          4.68M
100  9.99M   0  9.99M   0      0  5.85M      0           00:01          4.68M
100  9.99M   0  9.99M   0      0  5.85M      0           00:01          4.68M
unpacking source archive /nix/var/nix/builds/nix-83240-748363224/download.tar.gz