structuredAttrs is enabled

trying https://github.com/raine/aven/archive/refs/tags/v0.1.40.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  5.95M   0  5.95M   0      0  7.23M      0                              0
100  5.95M   0  5.95M   0      0  7.23M      0                              0
100  5.95M   0  5.95M   0      0  7.23M      0                              0
unpacking source archive /nix/var/nix/builds/nix-91129-3371383492/download.tar.gz