these 2 derivations will be built:
  /nix/store/wjvkkcci4kf6fwfy9k87hwisxfkjfrdl-nix-grpc-store-0.2.3.drv
  /nix/store/6kfdljsl1zn8h80jxkv1b7yf7rnbfr9b-nix-grpc-store-dispatcher.drv