Phobos Unittest

[Per Nordlöw]

On Friday, 3 September 2021 at 23:39:44 UTC, Per Nordlöw wrote:
> When is a phobos unittest supposed to be qualified with version 
> `(StdUnittest)`? Ideally, always? I don't see that their 
> current use is consistenly following a rule. If so, is the 
> purpose of its presence to reduce the burden of the compiler 
> when the application using phobos is compiled with -unittest? 
> (edited).

For reference, see my previous attempt at making dmd more 
flexible at compiling unittests at

https://github.com/dlang/dmd/pull/6375