// So we can parse the env vars ourselves and set up the correct client.
func newExporter() (trace.SpanExporter, error) {
	set := os.Getenv("OTEL_TRACES_EXPORTER") == "otlp" || os.Getenv("OTEL_EXPORTER_OTLP_ENDPOINT") != "" || os.Getenv("OTEL_EXPORTER_OTLP_TRACES_ENDPOINT") != ""
	if !set {
		return nil, nil
	}

	proto := os.Getenv("OTEL_EXPORTER_OTLP_TRACES_PROTOCOL")
	if proto == "" {