these 3 derivations will be built:
  /nix/store/n7pnpz5wjs1fj7a5xs1w3j1narssg266-source.drv
  /nix/store/5hpn2q9lkjx9a7cj0b8lsd42249p37g3-spec-kit-1.0.11.drv
  /nix/store/yzh5c6yrp423y9sbs6h2wj48zab3zaig-check-spec-kit.drv