Re: [gentoo-user] Uncle: qt-*:4 dependencies/blocks preventing world update

[Mick <michaelkintzios@gmail.com>]

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On Saturday 24 October 2009 02:46:32 Dale wrote:
> Alan E. Davis wrote:
> > I have read a number of different explanations and suggestions, some
> > of them regarding an earlier, yet similar, tanglement between versions
> > of qt-*.   I've tried a number of suggestions, and I have unmerged and
> > remerged packages.
> >
> > I am now trying to individually merge packages with dependencies on
> > qt-*-4.5.2.
> >
> > I tried KDE 4.3.1, with some trepidation, and I have happily been
> > running gnome, save a couple of nits, and I have run into qt issues in
> > the past.  I would like to uninstall kde4 (like it, but not well
> > enough to devote so many resources to it, and to have to upgrade
> > frequently and painfully).  I would like to remove the KDE 4
> > installation, but keep the individual packages depending on kdelibs.
> > (K3b, etc.).  Would this have an impact on this issue?  This is off
> > topic, but how to uninstall EXCEPT what I want, of KDE4?   Is this
> > reasonable?
> >
> > Thanks.  I hope to solve this soon,  but it's too early to know
> > whether the help on this list was enough.  I changed USE flags, and
> > the same messages appear:
> >
> > <<SNIP >>
> >
> > Thank you,
> >
> > Alan
> 
> Does this help any?
> 
> root@smoker / # eselect news read 6
> 2009-09-27-qt_use_changes
>   Title                     Qt 4.5.2 default USE flag changes
>   Author                    Alex Alexander <wired@gentoo.org>
>   Posted                    2009-09-27
>   Revision                  1
> 
> Qt version 4.5.2 has significant changes in the USE flags enabled by
> default.
> 
> When upgrading, make sure you check and re-enable any USE flags you
> need.
> 
> Depending on your system and installed packages, you might hit an issue
> where Portage is getting confused by this USE flag change, trying to mix
> old 4.5.1 ebuilds with new 4.5.2 ones, resulting in blocks.
> 
> If this happens to you, please add the offending USE flags (usually
> 'qt3support' and 'dbus') in your USE= or switch to a desktop profile
> (eselect profile list). Check this post [0] for more details on this
> issue.
> 
> [0] http://www.linuxized.com/p192
> 
> 
> root@smoker / #
> 
> I have this in my USE flags and I didn't run into this that I recall.
> 
> qt3  qt3support qt4
> 
> I think they are planning to remove qt3 in the future.  I'm not sure how
> close that future is tho.  I think qt3support is the key here.

Other than the thread that Dale offers, have you changed your profile to the 
latest 10.0?  This had caught me out and went unmerging/emerging qt to get 
things to work.  I think it would have been easier if I had updated my 
make.profile first which has the required default USE flags:

$ ls -la /etc/make.profile 
lrwxrwxrwx 1 root root 54 Oct 22 10:03 /etc/make.profile -> 
../usr/portage/profiles/default/linux/x86/10.0/desktop

HTH. 
-- 
Regards,
Mick

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