these 2 derivations will be built:
  /nix/store/s7j883d9y7lqbvlgw5a6pzrnzb2p8q3m-nix-grpc-store-0.2.3.drv
  /nix/store/h8zmkpdnfzgr20knm03zylzmd98jf8fw-nix-grpc-store-dispatcher.drv