these 2 derivations will be built:
  /nix/store/qci4yr603v22x3fv79n153sf8aix34ax-nix-grpc-store-0.2.2.drv
  /nix/store/528gybdhlzfig0iqabxw0iq5lmbsd03m-nix-grpc-store-dispatcher.drv