Bug#850409: tracker.debian.org: .dsc link to packages in update is broken

[Lev Lazinskiy <lev.lazinskiy@icloud.com>]

I started to work on this issue. The migration itself (both schema and data) is pretty straightforward. However, the rest of the code refactoring will take bit of time. 

> This is a problem with the data model used by the tracker. The "directory"
> field should never have been associated to a SourcePackage but to
> its associated SourcePackageRepositoryEntry. After all the package can
> reside on two mirrors in different locations while still being the same
> package.

Could you please clarify if the "directory" field should be a part of the SourcePackageRepositoryEntry model, or a part of the Repository model?

Right now, I have it as a part of the SourcePackageRepositoryEntry model (because that is what made sense in my mind) but I wanted to double check to make sure I was on the right track. 

Best, 
Lev