these 2 derivations will be built:
  /nix/store/27z5fy0xwmpdc9hnx90rckssyfczijni-nix-grpc-store-0.1.0.drv
  /nix/store/nzqv8nrma7aaah4ivvb4q7y5jjgci5fj-nix-grpc-store-exit-stress.drv