How can one reliably run unittests

[deadalnix]

On Friday, 3 September 2021 at 12:49:05 UTC, FeepingCreature 
wrote:
> Second, I was digging out my DMD bug 18843 ("-deps -unittest 
> causes cataclysmic memory usage"), just to throw some more fuel 
> on this trash fire of a debate, and good news: `dmd -deps 
> -unittest helloworld.d` no longer causes cataclysmic memory 
> usage:
>
> [...]
>
> I don't think I need to add anything here...

Well, we could add that even though it cause cataclysmic memory 
usage, the dependency tracking is not done properly, at least for 
rdmd: https://issues.dlang.org/show_bug.cgi?id=22268