these 2 derivations will be built:
  /nix/store/5ay4yjjlyxak5wnjwzhq62810kl1ac62-nix-grpc-store-0.2.2.drv
  /nix/store/m03hngmqq2zxyv6fvj8ha7lr3y7kmn59-nix-grpc-store-dispatcher.drv