How can I have those "template instance recursive expansion" errors under control?

[realhet]

On Sunday, 1 December 2024 at 19:55:59 UTC, realhet wrote:
> On Sunday, 1 December 2024 at 00:08:02 UTC, Richard (Rikki) 
> Andrew Cattermole wrote:
>> The trick...

Update: This not works!
> This is another ugly fix:
> ```d
> import het.math; void main(){ auto col = RGB(1, 2, 3); auto img 
> = image2D(1, 2, col); }
> ```

The trigger of the error is accessing Vector!(ubyte, 3) by the 
alias WITHOUT mentioning Vector!(ubyte, 3) previously!

A harmless way to 'mention' is -> pragma(msg, (Vector!(ubyte, 
3)).stringof[0..0]);

The alias declaration must be in a different module (minimum 2 
modules needed to reproduce.).