these 2 derivations will be built:
  /nix/store/xzhrqziyg4qn59j46mw02psf0xjdbgak-nix-grpc-store-0.1.0.drv
  /nix/store/19lqp48nnwi822r6idmfycvcphnvk7wm-nix-grpc-store-exit-stress.drv