these 2 derivations will be built:
  /nix/store/1fm1sihzxyb3qrif46wdkqxb5kspj7vp-nix-grpc-store-0.2.0.drv
  /nix/store/sh2zwzk7ww2wbs5h0fhzrsyidp23v7vv-nix-grpc-store-dispatcher.drv