these 2 derivations will be built:
  /nix/store/r78z49pj4vhnk0cry3afcgnh6yjcy9ig-nix-grpc-store-0.2.3.drv
  /nix/store/qibmj2crwcm487qf4i0wd6lx7mhp4pyq-nix-grpc-store-dispatcher.drv