add variant header

rrsettgast · rrsettgast · commit 7ba2edbf2843 · 2025-06-25T13:25:50.000-07:00
diff --git a/.gitignore b/.gitignore
@@ -1,4 +1,6 @@
 build*
 install*
 cmake/blt*
-.vscode*
+.vscode*
+.DS_Store
+src/.DS_Store
diff --git a/src/reactions/geochemistry/GeochemicalSystems.hpp b/src/reactions/geochemistry/GeochemicalSystems.hpp
@@ -4,6 +4,8 @@
 #include "Ultramafics.hpp"
 #include "Forge.hpp"
 
+#include <variant>
+
 namespace hpcReact
 {
 
