these 2 derivations will be built:
  /nix/store/x83hps8w02gwkpas22b50b6is0ycl4pq-nix-grpc-store-0.2.3.drv
  /nix/store/lb1gda5gac3znxbw2xzy344qfk5v8m9x-nix-grpc-store-exit-stress.drv