these 2 derivations will be built:
  /nix/store/fmw8i29sxbvk4gvhwhipvsbamdna8vdf-nix-grpc-store-0.1.0-beta.1.drv
  /nix/store/xzzvyjc73m02nnhp2mwwczpr4dzfbk2w-nix-grpc-store-exit-stress.drv