these 2 derivations will be built:
  /nix/store/9fs90pq4avaj0kzw1kyhbyff78rv890x-nix-grpc-store-0.1.0.drv
  /nix/store/rb1mfzs4b3yn65zhn2f8npkpx2chb18i-nix-grpc-store-dispatcher.drv