Re: [gentoo-dev] RFC: per-package default USE flags

[Marius Mauch]

On Fri, 13 Oct 2006 02:40:59 -0700
Zac Medico <zmedico@g.o> wrote:

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> Hi everyone,
>
> I've written a patch for portage [1] that implements per-package
> default USE flags at both the ebuild and profile levels (discussed a
> couple of months ago [2] on this list).  At the ebuild level, default
> flags are specified in IUSE with a + prefix as described in bug
> #61732 [3].  At the profile level, I've added support for package.use
> which behaves like /etc/portage/package.use that everyone is familiar
> with.  The intention is that the IUSE defaults will be used for
> default flags that should be enabled regardless of profile.  Then,
> package.use will be used for flags that might vary depending on the
> profile.  For example, a server profile might enable server flags and
> a desktop profile might enable client flags.
>
> Aside from being package specific, the per-package default USE flags
> behave much like USE flags that are currently listed in profiles'
> make.defaults.  The flags are stacked incrementally as usual.  The
> ebuild level defaults are at the bottom of the stack, followed by
> make.defaults, and finally package.use.  The user can override these
> new flags in the same was as make.defaults USE flags could always be
> overridden (make.conf and package.use).
>
> Should we include support in portage for one or both types of
> per-package default USE flags?  If support is included for IUSE
> defaults now, we won't be able to use them in the tree until after a
> waiting period or an EAPI bump [4].

I think adding both is fine, assuming that profile package.use
overrides the IUSE defaults. Though not sure if "pkginternal" should
come before or after the "defaults" in USE_ORDER, both make some sense
to me (but that's a detail that's trivial to change, so don't get
distracted by it too much).

Marius

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