these 2 derivations will be built:
  /nix/store/ks6y92z7mnvhw0jnl9cqbqgwxzq308sp-nix-grpc-store-0.2.2.drv
  /nix/store/xwzrf8m4jrqg97ri59ydp4v3fh2sszy0-nix-grpc-store-exit-stress.drv