cpython/Misc/NEWS.d/next/Library/2024-11-26-17-42-00.gh-issue-127178.U8hxjc.rst

A ``_sysconfig_vars_(...).json`` file is now shipped in the standard library
directory. It contains the output of :func:`sysconfig.get_config_vars` on
the default environment encoded as JSON data. This is an implementation
detail, and may change at any time.