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On Fri, Sep 16, 2011 at 12:49 AM, Zac Medico <firstname.lastname@example.org> wrote:
> On 09/15/2011 09:42 PM, Matt Turner wrote:
>> On Fri, Sep 16, 2011 at 12:32 AM, Matt Turner <email@example.com> wrote:
>>> Often packages depending on X11 libraries will also have to specify
>>> the X11 libraries' proto packages in DEPEND. This is because the X11
>>> library itself #includes files provided by the proto package. It's not
>>> really that the X11 library depends on this at run-time, so the
>>> protocol packages aren't specified in the RDEPEND of the libraries.
>>> This is documented in a number of bug reports (see 379545), and it
>>> seems that the decision is between
>>> - add proto package to dependency list of packages using X11 libs
>>> - add proto package to rdepend list of the relevant library itself
>>> The first is more correct, I think, but it's also much more annoying.
>>> Mesa winds up having x11-proto/inputproto in DEPEND for some long
>>> forgotten reason, for instance.
>>> The second option is much simpler and less error prone, but removes
>>> the ability to depclean the proto packages.
>>> It seems that some sort of DEPEND variable that means "I only need
>>> this when other packages are building against me" would be useful.
>> Another similar situation:
> Maybe the virtual/mesa-build approach that I suggested can be adapted to
> other similar situations:
That would no doubt help the case of Mesa, but as can be seen by
http://tinderbox.dev.gentoo.org/misc/rindex/x11-proto/ , there are
lots of other cases as well.