these 2 derivations will be built:
  /nix/store/kc1h290f47qr1ngq79dzykjvb2h5988z-nix-grpc-store-0.1.0.drv
  /nix/store/ffn3a402678c5mchzds3lmwfmnk7p799-nix-grpc-store-exit-stress.drv