these 2 derivations will be built:
  /nix/store/npz9jmliia1b6z311n6gcvmb2nz40kmf-nix-grpc-store-0.2.3.drv
  /nix/store/vhdkxyx6wz71f4d8hg51izcfg6c5i3yl-nix-grpc-store-dispatcher.drv