Incremental target images

[Jan Kiszka <jan.kiszka@siemens.com>]

Hi all,

I was wondering if / how we could model the increasingly common case of 
building very similar target images more efficiently.

A devel image, e.g., likely consists of almost the same base package set 
as the release image. It may only add further packages and maybe replace 
very few (like customization packages). When building both, we could 
save time - specifically when doing cross - by bootstrapping the 
baseline only once. We already do that for the debootstrap step, but not 
yet for further packages.

What do you think? And how could that be modeled from user perspective?

Jan

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