these 2 derivations will be built:
  /nix/store/0ww6lpchzqfcaaw2mriyr14xjiaj8rjk-nix-grpc-store-0.1.0.drv
  /nix/store/8v0nq9c6zrpjmxjrsmrcp66g6lk1q4qk-nix-grpc-store-exit-stress.drv