these 4 derivations will be built:
  /nix/store/z0g006s4df4dl9i5ny6iw9rcji57nj5c-source.drv
  /nix/store/0jl0ksgpxk1zrkm6ppjwf45qnsc8ik2h-claude-code-router-3.0.19-npm-deps.drv
  /nix/store/ri90bwb89q8q3h7aw5m36i510v03fp06-source.drv
  /nix/store/hxj1kpsqliwva3hg4lyvbgrlvmlng6gs-claude-code-router-3.0.19.drv