structuredAttrs is enabled

trying https://github.com/agentclientprotocol/claude-agent-acp/archive/refs/tags/v0.81.0.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
100 550.2k   0 550.2k   0      0 991.0k      0                              0
100 550.2k   0 550.2k   0      0 990.9k      0                              0
100 550.2k   0 550.2k   0      0 990.9k      0                              0
unpacking source archive /nix/var/nix/builds/nix-54369-360990187/download.tar.gz