these 2 derivations will be built:
  /nix/store/idhv8h6fdxynlkkxs00f4bjn4011fhv2-nix-grpc-store-0.2.3.drv
  /nix/store/imapn3hn6bbqhrqvlcbq4ykd2ybw98nh-nix-grpc-store-dispatcher.drv