these 2 derivations will be built:
  /nix/store/q9ay0w17wl18nfp14rlmyif9jqcnkh11-nix-grpc-store-0.1.0.drv
  /nix/store/vx9s7vhwpfqrc1l53wc46whszgch9k00-nix-grpc-store-exit-stress.drv