structuredAttrs is enabled

trying https://github.com/afjcjsbx/picoclaw/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 13.00M   0 13.00M   0      0  9.33M      0           00:01         12.47M
100 14.55M   0 14.55M   0      0  9.50M      0           00:01         12.47M
100 14.55M   0 14.55M   0      0  9.50M      0           00:01         12.47M
100 14.55M   0 14.55M   0      0  9.50M      0           00:01         12.47M
unpacking source archive /nix/var/nix/builds/nix-1601680-4062625920/download.tar.gz