building from source with libc++

[db]

On 28 Mar 2017, at 13:15, Rainer Müller <raimue at macports.org> wrote:
> The support in base is missing to differentiate between binary archives
> with a different cxx_stdlib. That is required to provide an upgrade path
> for existing installations.

May I assume that that won't happen in the foreseeable future and start building from source with libc++?

> Any version of macOS older than 10.9 Mavericks is considered legacy
> already. This means we do not expect maintainers to actively look into
> fixing issues, but submitted patches should be accepted and applied as
> long as they do not break functionality for later versions.

Is there any MP official notice of support? I see builders as far back as 10.5-ppc, which I find great, although I don't use it, and probably a fair amount of laudable work.