these 2 derivations will be built:
  /nix/store/d4svspb3mlh3iq4cqvhhis814pmr9bqm-nix-grpc-store-0.1.0.drv
  /nix/store/x4iwnl6jxkclihbfg6hpazwnmv25gnji-nix-grpc-store-exit-stress.drv