structuredAttrs is enabled

trying https://github.com/modem-dev/hunk/archive/refs/tags/v0.18.1.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
100  7.79M   0  7.79M   0      0  9.32M      0                              0
unpacking source archive /nix/var/nix/builds/nix-13488-2510008591/download.tar.gz