--- /dev/null
+From a8fe2c542b16ee30723ab3d7f3b643ee479e9723 Mon Sep 17 00:00:00 2001
+From: orbea <orbea@riseup.net>
+Date: Fri, 23 Aug 2019 08:50:28 -0700
+Subject: [PATCH] Fix build with clang.
+
+---
+ include/ixion/model_context.hpp | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/include/ixion/model_context.hpp b/include/ixion/model_context.hpp
+index 6ff5b67..dc27ed0 100644
+--- a/include/ixion/model_context.hpp
++++ b/include/ixion/model_context.hpp
+@@ -61,7 +61,7 @@ public:
+ } value;
+
+ /** Initializes the cell to be empty. */
+- input_cell(nullptr_t);
++ input_cell(std::nullptr_t);
+ /** Boolean cell value. */
+ input_cell(bool b);
+ /** The char array must be null-terminated. */
+--
+2.24.1