Re: [gentoo-dev] GLEP 42 "Critical News Reporting" Round Two

[Jason Stubbs]

On Saturday 05 November 2005 22:24, Brian Harring wrote:
> On Sat, Nov 05, 2005 at 10:18:14PM +0900, Jason Stubbs wrote:
> > > ``Display-If-Installed:``
> > >     A dependency atom or simple package name (for example,
> > >     ``<dev-lang/php-5_alpha`` or ``net-www/apache``). If the user has
> > > the     package specified installed, the news item should be
> > > displayed.
> > >
> > > ``Display-If-Keyword:``
> > >     A keyword [#glep-22]_ name, for example ``mips``. If the user is
> > > on the     arch in question, the news item should be displayed.
> > >
> > > ``Display-If-Profile:``
> > >     A profile path, for example
> > > ``default-linux/sparc/sparc64/server``. If     the user is using the
> > > exact profile in question, the news item should be     displayed.
> > > This header may be used to replace ``deprecated`` files in     the
> > > future.

Where'd those funny "A"s come from?

> > Isn't keyword just a generalization of profile? Why have both?
>
> You would have to specify a common subprofile, and have the code know
> to dig through the ancestors of a profile.

"If a user is using the exact profile in question"... Common subprofiles seem 
to be irrelevant. I was going to bring up that point as well, but then I 
recalled that some utilized profiles have children also (such as amd64/2005.1 
and amd64/2005.1/no-multilib). If subprofiles were also picked up, there 
would be no way to specify a news item that only pertained to multilib amd64 
systems.

> Breaks down when dealing with profiles that lack a common base
> (conversion from flat profiles to cascaded for example).

My understanding is that each class of header can appear multiple times. As 
far as I can tell Display-If-Keyword would just prevent having to specify 
Display-If-Profile for each profile of the keyword specified. I'd just like 
to clarify that it has no purpose beyond that.

--
Jason Stubbs

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