these 2 derivations will be built:
  /nix/store/vky7a5fh45lfhndp5cfjk2rzydz42psc-nix-grpc-store-0.1.0-beta.3.drv
  /nix/store/rcqjq71mqaisddz7pmzi354rnb2zpb31-nix-grpc-store-exit-stress.drv