these 2 derivations will be built:
  /nix/store/9fs90pq4avaj0kzw1kyhbyff78rv890x-nix-grpc-store-0.1.0.drv
  /nix/store/gmcv5xkhmckylcmlwlxrri05lxx92hmz-nix-grpc-store-exit-stress.drv