these 2 derivations will be built:
  /nix/store/4xvchd1d4vnzqh6hww40krq89f5187wj-nix-grpc-store-0.1.0-beta.1.drv
  /nix/store/n3x0014rmvv92axsknm7pvzd5ibrcrpz-nix-grpc-store-dispatcher.drv