these 2 derivations will be built:
  /nix/store/81djb1884ca7q8fm5np1hb2yk2fxhp31-claude-agent-acp-0.87.0.drv
  /nix/store/acxpv2im667kvz0qg78h8ip19zp2zl16-check-claude-agent-acp.drv