Can compilation times not be sped up any further?

[Seb]

On Saturday, 19 October 2019 at 21:56:44 UTC, Brett wrote:
> I have a huge code base... it seems D likes to recompile 
> everything every time from scratch. I realize there are ways to 
> fix this but can't D go a step further?
>
> [...]

I think this might answer some of your questions:

https://forum.dlang.org/post/mailman.484.1570820437.8294.dlang-internal@puremagic.com

tl;dr: there's a PR ...