qt4-mac dependencies - 2 RDBMS?

[Joshua Root]

Adam Mercer wrote:
> On Mon, Feb 16, 2009 at 11:43, Marcus Calhoun-Lopez
> <mcalhoun at macports.org> wrote:
> 
>> Qt4 used to behave as you suggest.
>> It was changed in r44200
>> (http://trac.macports.org/changeset/44200/trunk/dports/aqua/qt4-mac/Portfile).
>>
>> Some of the variants were removed because they were needed by other packages
>> (r44200 lists them).
>>
>> In addition, having all these variants made the port much harder to maintain.
> 
> Makes sense, I'm all for easy to maintain ports!

I don't see an explanation for why postgresql and mysql are needed in
that revision or the linked tickets, though. Is it documented somewhere?

- Josh