structuredAttrs is enabled

trying https://github.com/multica-ai/multica/archive/refs/tags/v0.5.1.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
  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 10.75M   0 10.75M   0      0  9.14M      0           00:01         10.70M
100 18.50M   0 18.50M   0      0  8.46M      0           00:02          9.18M
100 19.34M   0 19.34M   0      0  8.48M      0           00:02          9.18M
100 19.34M   0 19.34M   0      0  8.48M      0           00:02          9.18M
100 19.34M   0 19.34M   0      0  8.48M      0           00:02          9.18M
unpacking source archive /nix/var/nix/builds/nix-98209-844508846/download.tar.gz