these 2 derivations will be built:
  /nix/store/z7p36mvnvx8qc58wvj0kac82hbjb6vvv-nix-grpc-store-0.1.0-beta.1.drv
  /nix/store/rfybmhdrrv427486lwyrrxsjsrxp2ka1-nix-grpc-store-dispatcher.drv