Attribute transference from callbacks?

[Atila Neves]

On Sunday, 8 December 2024 at 05:54:40 UTC, Manu wrote:
> I've been trying out an API strategy to use sink functions a 
> lot more to hoist the item allocation/management logic to the 
> user and out from the work routines. This idea has received a 
> lot of attention, and I heard a lot of people saying this was a 
> planned direction to move in phobos and friends.
>
> [...]

I remember Mathias had a plan for this. I think.