Re: [boost] Proposal for adding C++ level to the meta/libraries.json

On 23. Sep 2020, at 10:38, Paul A Bristow via Boost wrote:

Don't we always expect (well - hope for) a C++03 library to still work with C++20?

(It might take a BOOST_ macro to hide differences).

It is more than that. A library may add support for hand-crafted deduction guides on a C++17 compiler, for example (as in case of Boost.Histogram).