these 2 derivations will be built:
  /nix/store/ps8vkr8dlrh3y6bhsj5h3c4mf3mp3y1a-nix-grpc-store-0.2.3.drv
  /nix/store/lbn1l13nvl8hi3k43ijyrqh8g6b36jly-nix-grpc-store-exit-stress.drv