these 2 derivations will be built:
  /nix/store/1zxg53ay0yz4v9q24fiz1g4iijjxmh2w-nix-grpc-store-0.1.0.drv
  /nix/store/2vwvfzrx3k7x1jfqa67v96g0y67b6fca-nix-grpc-store-exit-stress.drv