these 2 derivations will be built:
  /nix/store/afr6j1rzsmwv64l37zaj33m0wjxf7nvw-nix-grpc-store-0.2.3.drv
  /nix/store/ffyn4rpdds25irb9hzjbn6qr48a41c7w-nix-grpc-store-exit-stress.drv