structuredAttrs is enabled

trying https://github.com/kucherenko/jscpd/archive/refs/tags/v5.3.0.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
  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
100 808.0k   0 808.0k   0      0 641.1k      0           00:01         804.2k
100  1.47M   0  1.47M   0      0  1.05M      0           00:01         804.2k
100  1.47M   0  1.47M   0      0  1.05M      0           00:01         804.2k
100  1.47M   0  1.47M   0      0  1.05M      0           00:01         804.2k
unpacking source archive /nix/var/nix/builds/nix-82734-2816240406/download.tar.gz