these 2 derivations will be built:
  /nix/store/vixjchvayr0ylkgkjxm5j4bwbnb4a6m9-nix-grpc-store-0.1.0.drv
  /nix/store/5jgs0d8kman805r3ncn8qq4r2synmd86-nix-grpc-store-exit-stress.drv