these 2 derivations will be built:
  /nix/store/nsml6pxv1m7kwbk1zapdik9j6va3lahr-nix-grpc-store-0.2.2.drv
  /nix/store/87f4f382anm2gna6vxb3i6kncsiylwlq-nix-grpc-store-dispatcher.drv