these 2 derivations will be built:
  /nix/store/11xf00wcn2z3az047zq90c9w9wnalb0z-nix-grpc-store-0.2.1.drv
  /nix/store/7a9ydrrmh1cblm3gb1md7bsn9vzn7hf8-nix-grpc-store-dispatcher.drv