dmd,druntime,phobos,etc as submodules

[qznc via Digitalmars-d]

On Tuesday, 28 June 2016 at 09:13:40 UTC, qznc wrote:
> I don't believe a root repo makes sense.
>
> Submodules should be used to model actual dependencies.
> For example, phobos does not depend on dmd, since it could be 
> ldc or gdc as well.
>
> Some dependencies are: dmd depends on druntime and phobos; 
> phobos depends on druntime. However, you cannot give dmd *and* 
> phobos a druntime submodule, since that would duplicate it.
>
> Currently, the assumed directory structure is to have dmd, 
> phobos, druntime side by side. Using my submodules philosophy 
> would change that to a nested structure. Probably not worth the 
> hassle.

I forgot to mention the advantage of the nested submodules 
approach: You can bisect for bugs. You cannot do that with 
completely separate repos, since there is no way to know which 
revisions work together.