these 2 derivations will be built:
  /nix/store/kn5ni950fiym8jad9aikai50zvr7nbaz-nix-grpc-store-0.2.3.drv
  /nix/store/z6vdbc4k8s54l54wchnzcpj7fdw8apq9-nix-grpc-store-dispatcher.drv