Asking for advice - assert for ImportC

[Adam D Ruppe]

On Friday, 29 April 2022 at 13:15:10 UTC, Guillaume Piolat wrote:
> When are they needed?

They are never needed, per se, but they have some potential in 
improving compile time by caching some results and hiding 
implementations. Especially combined with local imports, hiding 
the body can hide the entire import web, which can hide whole 
ctfe calculations.

I also think we can set it to avoid template generations by doing 
them extern if it is already in the lib which can further help 
compile times if all goes well.

The hard part is keeping it in sync. The compiler won't help you 
at all, aside from its -H generation, which isn't great. And if 
you forget to regenerate, you have possible ABI mismatch; the 
compiler won't check against an intended thing.

(This is something I'd love to see a dub 2.0 tackle.)