On Fri, 2017-04-21 at 18:57 +0900, Masahiro Yamada wrote:
[...]
> In hindsight, it seems more straightforward to me
> to build the binary packages from the source package.
> But, I know this refactoring will need lots of changes, which may
> break something.
> 
> Once we support this fastdeb-pkg target,
> we will not be able to convert the script in that way.
> (because we do not have a standard way to generate a particular binary
> package from *.dsc)
[...]

We kind of do, though it's a relatively new feature:
https://wiki.debian.org/BuildProfileSpec

Ben.

-- 
Ben Hutchings
I'm not a reverse psychological virus.  Please don't copy me into your
sig.