Why I need DUB? Will never DMD don't just use import for import packages?

[Marcone]

On Monday, 29 March 2021 at 19:14:41 UTC, Andre Pany wrote:
> On Monday, 29 March 2021 at 19:06:33 UTC, Marcone wrote:
>> Why can't I just use: import vibe.vibe; for import packages 
>> like Nim or Python? Why I still use DUB?
>
> In python you also have pip.
>
> It is possible to use vibe.d (any dub package) without dub but 
> you have a few manual steps involved.
>
> Kind regards
> Andre

Why DMD can't make automatic this few steps involved?