these 2 derivations will be built:
  /nix/store/7d77pxxh5pzn0dpa0a4479nfnxvrcvbr-nix-grpc-store-0.2.2.drv
  /nix/store/xhq8jycvvi6b6n8krgk69riz15jdv1aq-nix-grpc-store-exit-stress.drv