[RFC] A change to the way packages are built

[Daniel Dickinson]

Hi,

I wanted to know if there is any appetite for an idea I've been kicking
around in my head for a while for package builds.

Basically one builds a minimal SDK and does kind of like Debian where a
git commit to a package kicks of a build of pristine environment which
builds only the package and it's dependencies.

The goals are:

1) Avoid the cost of monolithic rebuilds of every package in the enabled
feeds for every snapshot (obviously packages depend on specific kernel
versions do have to be rebuilt when the kernel is rebuilt).

2) Faster turnaround on package builds when a package change is committed.

3) Decouple (where possible) packages from the core.

Thoughts?

Regards,

Daniel