these 2 derivations will be built:
  /nix/store/rd9drmj1714rhfxbaic3jhkfbphj2718-nix-grpc-store-0.1.0-beta.3.drv
  /nix/store/znyyfgy63dblcdq5mysd167k6g2ipfc5-nix-grpc-store-exit-stress.drv