these 2 derivations will be built:
  /nix/store/1nmx1d0v93i68f8h9my8vhwxglil10zg-nix-grpc-store-0.2.0.drv
  /nix/store/6xh9jrkqwf3zn494npai2462yczpa4l0-nix-grpc-store-dispatcher.drv