these 2 derivations will be built:
  /nix/store/ynyjbdjbs8ppijc6kq9n02ni6hwj4bxr-nix-grpc-store-0.2.2.drv
  /nix/store/v3vm09i7yrwy1nz2zksn2k679yn45c7x-nix-grpc-store-exit-stress.drv