Re: [gentoo-dev] Dependencies that're available at pkg_*inst

[Donnie Berkholz <dberkholz@gentoo.org>]

On 05:54 Sat 19 Apr     , Ciaran McCreesh wrote:
> On Fri, 18 Apr 2008 21:45:13 -0700
> Donnie Berkholz <dberkholz@gentoo.org> wrote:
> > I'd go with RDEPEND only. Any other interpretation results in
> > installing build-time-only packages along with a binpkg, which
> > doesn't seem to make sense.
> 
> That's definitely not what we want. Only a package's DEPENDs have to be
> installed and usable when that package is built. Its RDEPENDs don't
> have to be installed until that package is treated as usable.

I previously failed to clarify the situation I preferred because either 
1 or 2b qualify as requiring RDEPEND to be installed.

My interpretation is pkg_* counts as runtime (I can imagine a package 
wanting to run itself at this point), so packages in RDEPEND should be 
usable at that point. Really, it seems to be an additional type of 
dependency that neither DEPEND or RDEPEND fully describe, and this 
DEPEND+RDEPEND idea isn't quite capturing it either. I say this because 
I wouldn't want everything in DEPEND installed with a binpkg so it can 
run pkg_*, and I also can see how some people wouldn't consider a 
package in a runnable state until pkg_* have finished (so thus RDEPEND 
shouldn't be required).

> For why this matters:
> 
> cat/a-1: RDEPEND cat/b
> cat/b-1: RDEPEND cat/a
> 
> This is solvable. If package managers can't solve this, they can't
> install Gnome off a stage 3...

Dealing with this under my interpretation is a bit weird. I think it 
might need some sort of staging area. That's one reason I mentioned the 
additional dep type.

Thanks,
Donnie
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