these 2 derivations will be built:
  /nix/store/nx7k1mfyia2fmyvw25xarx2wky63lygx-nix-grpc-store-0.2.3.drv
  /nix/store/i4qgf3v8cnijzdyvbx7pgadfm7nczqaw-nix-grpc-store-dispatcher.drv