these 2 derivations will be built:
  /nix/store/g8k3r68xs0vlp00y34dwrv5dnay341zy-nix-grpc-store-0.2.0.drv
  /nix/store/3y2gcf9w091bi10q52xnfsamrcblm1w9-nix-grpc-store-dispatcher.drv