these 2 derivations will be built:
  /nix/store/g2v4nfl4r94254gah409l8k64wrh9y16-nix-grpc-store-0.2.2.drv
  /nix/store/v9srx6mfppll0l39vh5mwdsimci5fc4x-nix-grpc-store-dispatcher.drv