these 2 derivations will be built:
  /nix/store/06iqaz8fyfkx0shrdalld71vf7rf57wm-nix-grpc-store-0.2.3.drv
  /nix/store/y43nx8rm5f9qvn9nx3pq662aypkfkwqa-nix-grpc-store-exit-stress.drv