these 2 derivations will be built:
  /nix/store/zjlha8pid01skl4j2n8cddj42rv79ydz-nix-grpc-store-0.2.2.drv
  /nix/store/cj4aq9ifszr7ly3jy9198a94zhkc9ghj-nix-grpc-store-dispatcher.drv