New __traits

[BLM768 via Digitalmars-d]

On Thursday, 26 November 2015 at 02:20:43 UTC, Daniel Murphy 
wrote:
> Unfortunately I have no idea.  You'll have to have a look at 
> what other code that resolves packages is doing.
>
> If you can't find it it might be worth emailing Kenji Hara, 
> since he knows everything.

Well, expression.d seems to do it this way. It's also got a check 
for "pkg == null", so maybe I should include that. Currently my 
code would just swallow the issue and report that the argument 
isn't a package. Then again, I don't even know whether it's 
possible for my code to forward-reference an import; if not, pkg 
will never be null anyway. Maybe I'll just assert it or 
something...