Local repositories and locally modified packages

[kika]

I have a few packages in my app which I restructured to use one common package with common data access and massage procedures, etc. So now all these packages use this one as a dependency.
I used to have my own repository which I cloned from the kan.so repository and published my packages to. But this publish/unpublish process for a single application development looks a little bit superfluous.
I also have some standard packages hacked a little to better suit my needs.

Is there an official way to install dependencies from local directories? I came up with a PR #427 but may be I'm missing something and it's already possible?