these 2 derivations will be built:
  /nix/store/0x1vqiyx45qxqn4mzsslam3fd1jl64fy-nix-grpc-store-0.1.0.drv
  /nix/store/0bbds3788vk2mvh70kydmhmkrpcg4zj4-nix-grpc-store-dispatcher.drv