these 2 derivations will be built:
  /nix/store/v5rf2wkz8sjmf4nlsp64h0dnqj8x5fdd-nix-grpc-store-0.1.0-beta.4.drv
  /nix/store/lgwb6d70pzs1fabvd8p8skhy62n9chr7-nix-grpc-store-dispatcher.drv