these 2 derivations will be built:
  /nix/store/84vvdj6akpw3lsi18a5k53rby04v3xdj-nix-grpc-store-0.1.0.drv
  /nix/store/pvbk2fb43nc3248b94k0rn7sq1gw8j6f-nix-grpc-store-exit-stress.drv