Might be interesting for more people.
Just added a recipe to our dub cookbook (yes that exists).
[Creating a library package that also comes with an
executable](https://github.com/dlang/dub/wiki/Cookbook#creating-a-library-package-that-also-comes-with-an-executable)
Seems like quite a lot of people keep (ab)using much more
complicated subpackages for that.
https://github.com/dlang/dub/issues/1155
Subpackages are intended to modularize your package for the
outside, e.g. to only link against vibe-d:data
(http://code.dlang.org/packages/vibe-d%3Adata), while keeping all
of them in a single repo.
Configurations are intended to offer different flavors of the
same source code and work great to offer executable and library
targets.
