https://bugs.gentoo.org/932459
https://github.com/boostorg/python/issues/431
https://github.com/boostorg/python/pull/432

From 33ac06ca59a68266d3d26edf08205d31ddab4a6c Mon Sep 17 00:00:00 2001
From: Alexis DUBURCQ <alexis.duburcq@gmail.com>
Date: Fri, 15 Mar 2024 14:10:16 +0100
Subject: [PATCH] Support numpy 2.0.0b1

--- libs/python/src/numpy/dtype.cpp
+++ libs/python/src/numpy/dtype.cpp
@@ -98,7 +98,13 @@ python::detail::new_reference dtype::convert(object const & arg, bool align)
   return python::detail::new_reference(reinterpret_cast<PyObject*>(obj));
 }
 
-int dtype::get_itemsize() const { return reinterpret_cast<PyArray_Descr*>(ptr())->elsize;}
+int dtype::get_itemsize() const {
+#if NPY_ABI_VERSION < 0x02000000
+  return reinterpret_cast<PyArray_Descr*>(ptr())->elsize;
+#else
+  return PyDataType_ELSIZE(reinterpret_cast<PyArray_Descr*>(ptr()));
+#endif
+}
 
 bool equivalent(dtype const & a, dtype const & b) {
     // On Windows x64, the behaviour described on