structuredAttrs is enabled

trying https://github.com/Dicklesworthstone/beads_viewer/archive/refs/tags/v0.18.0.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 56.34M   0 56.34M   0      0  6.95M      0           00:08          7.00M
unpacking source archive /nix/var/nix/builds/nix-80460-4138867026/download.tar.gz