these 2 derivations will be built:
  /nix/store/vn2cm356xb6c4k27vlvvj6izr9i6n0f1-nix-grpc-store-0.1.0.drv
  /nix/store/4yqx7hsqxrhkr1061aha9facsmv6nwai-nix-grpc-store-exit-stress.drv