fn main() -> Result<(), Box> { let proto_file = "../../proto/creditservice.proto"; let protoc = protoc_bin_vendored::protoc_bin_path()?; std::env::set_var("PROTOC", protoc); tonic_build::configure() .build_server(true) .build_client(true) .compile_protos(&[proto_file], &["../../proto"])?; println!("cargo:rerun-if-changed={}", proto_file); Ok(()) }