these 2 derivations will be built:
  /nix/store/w2bl2h3pz4jrs12p3r6gdh3h7mrqg5x1-nix-grpc-store-0.1.0.drv
  /nix/store/5a7wyv8vm6gq7ayc1bvb4alia949r6h3-nix-grpc-store-exit-stress.drv