From a073776984274a8141a9f0ccecc652bcabd26e7e Mon Sep 17 00:00:00 2001
From: Ian Bell <ian.bell@nist.gov>
Date: Fri, 12 May 2023 10:57:28 -0400
Subject: [PATCH] Replace missing optional

---
 include/teqp/cpp/teqpcpp.hpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/teqp/cpp/teqpcpp.hpp b/include/teqp/cpp/teqpcpp.hpp
index a2535a3..3d6c004 100644
--- a/include/teqp/cpp/teqpcpp.hpp
+++ b/include/teqp/cpp/teqpcpp.hpp
@@ -1,6 +1,7 @@
 #pragma once 
 #include <memory>
 #include <typeindex>
+#include <optional>
 
 #include <Eigen/Dense>
 #include "nlohmann/json.hpp"
-- 
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