these 2 derivations will be built:
  /nix/store/yvjxz5jjx3f2mhh91dq60ng8xckfbs03-nix-grpc-store-0.2.3.drv
  /nix/store/sqb6wywnlwvscvszx8mbhci253fy87vw-nix-grpc-store-dispatcher.drv