structuredAttrs is enabled

trying https://github.com/raine/aven/archive/refs/tags/v0.1.22.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
100  3.36M   0  3.36M   0      0  4.74M      0                              0
unpacking source archive /nix/var/nix/builds/nix-15822-1025227446/download.tar.gz