these 2 derivations will be built:
  /nix/store/abgsn1ak7f92hxwbnhlngfw1n43pw2dx-nix-grpc-store-0.1.0.drv
  /nix/store/k0ypcj764r4zzvp02xrvwhf40l64gkn2-nix-grpc-store-dispatcher.drv