> Unfortunately WG21 seems to have some issues with any ideas coming out from Circle, going back to its early days, and I don't see them being willing to adopt Sean's work.
It was due to the metaprogramming capabilities, due to how Circle enables to use full C++ at compile time instead of constexpr/constinit/constval, David Sankel has a talk where he jokes with the WG21 decision process that was behind it,
"Don't constexpr All the Things", from CppNow 2021,
What reasons? Are those valid?