these 2 derivations will be built:
  /nix/store/v8k5qxb53rxxw06glm3b5vr6xw0krnp2-nix-grpc-store-0.2.0.drv
  /nix/store/i28x3smdprzrxm4yzq6nivgg4j3qjyqp-nix-grpc-store-dispatcher.drv