these 2 derivations will be built:
  /nix/store/q4isjqqgbpabp2439fcwznxfpcryh2kl-nix-grpc-store-0.1.0.drv
  /nix/store/ymkwmarj35f24lw27a8mlkx514iizc6f-nix-grpc-store-dispatcher.drv