these 2 derivations will be built:
  /nix/store/dqg8xrrzdb6sw6jvrkm0c5d5c341rw34-nix-grpc-store-0.2.0.drv
  /nix/store/qsvlw9q4sr44q1nfd8v8h38d4kj2hxrd-nix-grpc-store-dispatcher.drv