these 2 derivations will be built:
  /nix/store/kp6cpj3rpg4qgqycpb6l69qgl6dbbza9-nix-grpc-store-0.2.2.drv
  /nix/store/hdyjix8jz3ba6x2qg0i2myy7v2i5lq74-nix-grpc-store-exit-stress.drv