these 2 derivations will be built:
  /nix/store/r9gw91ym5jgjvyzkkkamr6hbz2vfhgh3-nix-grpc-store-0.2.3.drv
  /nix/store/ajs9xzb81gw3774d08s79s3x1wzfx0jc-nix-grpc-store-dispatcher.drv