these 2 derivations will be built:
  /nix/store/la5m31qg8ijiiy231y6wj0a7hhck1gj7-nix-grpc-store-0.2.2.drv
  /nix/store/ks55p53q8l2xqiqz0njj0185v1fajw2m-nix-grpc-store-exit-stress.drv