these 2 derivations will be built:
  /nix/store/8v2ipyra23as54lf9r2y76s75lrq0dmi-nix-grpc-store-0.2.2.drv
  /nix/store/p131mk1nz7bjkns45nx22cm4p0k0x4lg-nix-grpc-store-exit-stress.drv