these 2 derivations will be built:
  /nix/store/3sj2is80wih7j414xknjgdcji74n5fqq-nix-grpc-store-0.2.3.drv
  /nix/store/zkl0wl7f0fqq63vwnyg8mb8zshg04z8p-nix-grpc-store-exit-stress.drv