Description of problem:
Package boost fails to build from source in Fedora Rawhide.

Version-Release number of selected component (if applicable):
1.83.0-9.fc42

Steps to Reproduce:
koji build --scratch f42 boost-1.83.0-9.fc42.src.rpm

Additional info:
This package is tracked by Koschei. See:
https://koschei.fedoraproject.org/package/boost

Reproducible: Always

Actual Results:  
libs/python/src/numpy/dtype.cpp: In member function ‘int boost::python::numpy::dtype::get_itemsize() const’:
libs/python/src/numpy/dtype.cpp:101:83: error: ‘PyArray_Descr’ {aka ‘struct _PyArray_Descr’} has no member named ‘elsize’
  101 | int dtype::get_itemsize() const { return reinterpret_cast<PyArray_Descr*>(ptr())->elsize;}
      | 


This has started to happen after the update to numpy 2.