these 2 derivations will be built:
  /nix/store/3z4d57v4kzdrrazdk2ls1xmwwzfnaggx-nix-grpc-store-0.1.0.drv
  /nix/store/yn3g2llvmc8kj41v6n5573zy034mcwfc-nix-grpc-store-dispatcher.drv