structuredAttrs is enabled

trying https://github.com/raine/aven/archive/refs/tags/v0.1.50.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 11.23M   0 11.23M   0      0  8.26M      0           00:01         11.18M
100 12.16M   0 12.16M   0      0  8.29M      0           00:01         11.18M
100 12.16M   0 12.16M   0      0  8.29M      0           00:01         11.18M
100 12.16M   0 12.16M   0      0  8.29M      0           00:01         11.18M
unpacking source archive /nix/var/nix/builds/nix-1265942-2711782283/download.tar.gz