What you are looking for must be Copperspice: https://www.copperspice.com/ It checks all your boxes, since it is a hard fork of Qt, but doesn’t use the moc and only an open source licence. Since you haven’t even tried to explain why you won’t use Qt, it is a little difficult to help with an alternative.

That being said, it really sounds like what you are looking for is Qt 🤷

One of the reasons they got through with it is that the big three already has it, so I guess… Update and read the documentation of your compiler of choice?

I can live without Logseq but for work and keeping a log of how that worked (other than bash history) It’s really useful

Good question. My response would be: only where it is not used as an enum. The example in the article is one example (although I’ve never seen that idiom in the wild) or for doing things like bitfields (the opposite of the to_underlying section).