these 2 derivations will be built:
  /nix/store/020lnar9gm2gm3pphyscp3z0654hm0rw-nix-grpc-store-0.1.0.drv
  /nix/store/lpxmpq6d4qfb0hx04mycj1ywcdk343xw-nix-grpc-store-exit-stress.drv