these 2 derivations will be built:
  /nix/store/m5bjrrp158z6bvak9p6gyw27gx6dl25c-nix-grpc-store-0.1.0.drv
  /nix/store/pvjj6ppcqjllmv683b4rw0gppzkj5jac-nix-grpc-store-exit-stress.drv