Does anyone use a custom GC?

[cc]

On Friday, 21 June 2024 at 02:59:43 UTC, Steven Schveighoffer 
wrote:
> This will mean that anyone who is currently using a custom GC 
> will have their code broken, and in general, they will have to 
> implement some new features.
>
> Before I start trying to push for these changes, I want to know 
> who realistically uses custom GCs that are not already in 
> druntime?

Short answer no, but I occasionally temporarily cram in 
additional convenience code to aid pinpointing or monitoring 
certain behaviors during debugging.  Anything that improves 
future potential to customize or swap GC modules sounds great to 
me.