D Editions

[Atila Neves]

On Saturday, 28 December 2024 at 02:03:57 UTC, Timon Gehr wrote:
> On 12/26/24 10:55, Atila Neves wrote:
>>>
>>> It may not be known at library compile time what edition the 
>>> user will be using, and there may be multiple different users 
>>> on different editions.
>> 
>> Right, but not all edition-specific branches will need to 
>> compile in any one given compiler pass, right?
>
> Well, I think if a library wants to branch on the edition of 
> the caller, all of those branches would need to be compiled 
> when the library is compiled. (Think druntime.)
>
> Of course, the case where a library wants to branch on its own 
> edition is separate. There, not all branches will need to 
> compile on any given compiler invocation, though I am not sure 
> that this is an important case (as usually every piece of code 
> just targets a specific edition).

Ok. What do you propose we do, then? Because AFAICT none of the 
current mechanisms will work for this.