** stacks consist of one system profile and multiple application profiles
** don't do this: Gentoo itself has only a few profiles and even there issues arise when combining them (for example desktop + selinux-hardened) --[[User:Tiziano|Tiziano]] ([[User talk:Tiziano|talk]]) 14:40, 3 January 2014 (CET)
*** Those are build-profiles (for example chroots or some sort of overlay-fs) not Gentoo (portage) profiles, we definitely need to clarify those terms ;) --[[User:Chrigu|Chrigu]] ([[User talk:Chrigu|talk]]) 20:01, 5 January 2014 (CET)
* All portage build profiles will use a system profile as their base profile
* Ability to update an existing build profile, without the need to build it from scratch