Newbie: out-of-source builds with "dub"?

[CC]

On Monday, 30 July 2018 at 07:34:04 UTC, Alex wrote:
>> I've started playing with "dub", and it *seems* to assume that 
>> you want the files generated during the build process to 
>> reside directly inside your checked-out source tree.
>>
>> Is that true?  And if so, am I fighting dub's design by 
>> attempting out-of-source builds?
>
> For example, you could define
> "targetPath"
> within the dub configuration, which points to a relative path 
> somewhere.
>
> [1] https://code.dlang.org/package-format?lang=json

Thanks Alex.  IIUC what you're proposing is close to what I'd 
need for true out-of-source builds, but not quite there.

With "targetPath", it sounds like I'd need to modify a file 
(DUB's .json file) that's in the source tree to indicate where 
some(?)/all(?) of the files resulting from the build would be 
stored.

But it sounds like I'm maybe fighting DUB's design by even 
attempting out-of-source builds.  So I need to ask: when using 
Dlang and DUB, are in-source builds simply the idiomatic way of 
doing things?

As much as I'm a fan of out-of-source builds, I'm trying to be 
open-minded as I dive into D.