structuredAttrs is enabled

trying https://registry.npmjs.org/@anthropic-ai/sandbox-runtime/-/sandbox-runtime-0.0.81.tgz
  % 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  4.61M 100  4.61M   0      0 14.79M      0                              0
100  4.61M 100  4.61M   0      0 14.79M      0                              0
100  4.61M 100  4.61M   0      0 14.79M      0                              0
unpacking source archive /nix/var/nix/builds/nix-3121703-3131596260/sandbox-runtime-0.0.81.tgz