these 2 derivations will be built:
  /nix/store/ayzj3l3i2qsrz8hkvfypjwg37d5sqin9-nix-grpc-store-0.2.3.drv
  /nix/store/aw4a7z8wbc0f8qp95hmnyjf6yq5rx0vd-nix-grpc-store-dispatcher.drv