these 2 derivations will be built:
  /nix/store/n6dsx499n26gynklx2yzwppldgn8rfva-nix-grpc-store-0.1.0.drv
  /nix/store/l17f5xs7jy0ms1fzjgk85j10vpd0lcki-nix-grpc-store-exit-stress.drv