Inner Modules?

[forkit]

On Saturday, 12 February 2022 at 22:33:25 UTC, forkit wrote:
>
> I'm just exploring at 'a conceptual level', how to retain 
> private visibility within a module without having to split it 
> into 'separate files'.
>

Actually, there's more to it, that I'm looking for:

  - Stronger encapsulation within components, contained within a 
module.

  - Enscapsulating all the information needed within a module, 
within a single file.

It seems the only practical way to achieve the above, *without* 
changing language rules with regards to modules/visibility etc, 
is through an inner modules concept.

Again, conceptually only (I'm not making the case that D should 
actually do this).