these 2 derivations will be built:
  /nix/store/r9gw91ym5jgjvyzkkkamr6hbz2vfhgh3-nix-grpc-store-0.2.3.drv
  /nix/store/wjmhxla4v9lnzv1cv7h15n9lqvdcwkv3-nix-grpc-store-exit-stress.drv