these 2 derivations will be built:
  /nix/store/03qd63gk2dbdkr2wl4z9dcacblm5308a-nix-grpc-store-0.1.0-beta.1.drv
  /nix/store/307j6fy3cdn6lbk6hibj55sawkb4py85-nix-grpc-store-exit-stress.drv