File missing-headers.patch of Package python-iminuit

Index: iminuit-2.21.3/src/fcn.hpp
===================================================================
--- iminuit-2.21.3.orig/src/fcn.hpp
+++ iminuit-2.21.3/src/fcn.hpp
@@ -1,6 +1,7 @@
 #include <Minuit2/FCNGradientBase.h>
 #include <pybind11/pytypes.h>
 #include <vector>
+#include <cstdint>
 
 namespace py = pybind11;