these 2 derivations will be built:
  /nix/store/ghp34pcmjz4xvrrv7ha6zjam259xvp7m-nix-grpc-store-0.1.0-beta.3.drv
  /nix/store/sgkk5ff7j8q33z2hf2jaxcw5941rndcz-nix-grpc-store-exit-stress.drv