Better error messages - from reddit

[Nicholas Wilson]

On Monday, 4 March 2019 at 23:03:28 UTC, Adam D. Ruppe wrote:
> On Monday, 4 March 2019 at 15:47:12 UTC, H. S. Teoh wrote:
>> This is why I'm starting to think sig constraints are not the 
>> genius idea they first appeared to be.
>
> If the implementation actually told you which individual pieces 
> failed (and perhaps even why), I don't think we'd be worried 
> about this.

Way ahead of you ;)

https://github.com/dlang/DIPs/pull/131