these 3 derivations will be built:
  /nix/store/gk1mzrvy6dhh7myyn7c3sywznjr33jas-claude-code-router-3.1.2-npm-deps.drv
  /nix/store/bb1jgx8yaigj6p4amiakc2i4dy2whkdj-claude-code-router-3.1.2.drv
  /nix/store/jwcjy6xj2wlpyfz2gwnfdp1xicf6jchm-check-claude-code-router.drv