these 2 derivations will be built:
  /nix/store/bai9aj9csw16f8nn0v018j1nmqi01zq0-nix-grpc-store-0.2.1.drv
  /nix/store/kcpwj56xkhdpdsvgd083b5vp6bxrmdph-nix-grpc-store-exit-stress.drv