these 2 derivations will be built:
  /nix/store/1gvxp9fsbgzk6kqbxi6dsk7a131f4wlg-nix-grpc-store-0.2.3.drv
  /nix/store/xs1bhkiwynpm6b3x4g1wvb19xsz8jfpk-nix-grpc-store-dispatcher.drv