The T2 Linux package system is pretty straightforward and easy to understand. Most users are system administrators and the choice of bash over make should be considered pragmatic - shell scripts are much easier to read, write and debug than Makefiles. For the functional parts Makefiles would include shell-scripts anyway.

Packages are stored in a logical tree of repositories where each package has its own directory. The package can be stored in repositories according to its type (i.e. base, gnome2, powerpc) or grouped by the maintainer.