these 2 derivations will be built:
  /nix/store/9zmckr2j2p8gxrp301kx4baxrzq0m9hq-claude-code-router-3.1.1-npm-deps.drv
  /nix/store/l5i4v4p8v5w6x1r5h2wwz6i04z2rx2pc-claude-code-router-3.1.1.drv