these 2 derivations will be built:
  /nix/store/bjx9ck60dixg0knvh3vfq4bdia96yxm9-nix-grpc-store-0.2.3.drv
  /nix/store/dg5r03k8914sc9w38fdsfa9a8akq95ai-nix-grpc-store-dispatcher.drv