these 4 derivations will be built:
  /nix/store/9afdc1wyp51zkar57ryc6n5dww0rjmnb-source.drv
  /nix/store/gk9wc5119qnxymfbljir1jwx0gsagi7x-source.drv
  /nix/store/rlp46xj0nap25p5kbw02617a1khhrbb3-claude-code-router-3.0.21-npm-deps.drv
  /nix/store/3s3k3y72rz3rg4m7cykvvxd1larzxlm4-claude-code-router-3.0.21.drv