[gentoo-user] Re: Confusion about slot conflict

[»Q« <boxcars@gmx.net>]

On Sun, 5 Jan 2014 15:57:10 +0000
张东亚 <fortitude.zhang@gmail.com> wrote:

> Hi list,
> 
> When I do a world upgrade, I have encountered the following slot
> conflict:
> 
> 
> media-libs/libpng:0
> 
>   (media-libs/libpng-1.5.17-r1::gentoo, installed) pulled in by
>     media-libs/libpng:0/0= required by
> (dev-python/wxpython-2.8.12.1-r1::gentoo, installed)
>     >=media-libs/libpng-1.4:0/0= required by
> (net-libs/webkit-gtk-1.8.3-r201::gentoo, installed)
>     media-libs/libpng:0/0= required by
> (app-text/poppler-0.22.5::gentoo, installed)
>     media-libs/libpng:0/0= required by
> (media-libs/libwebp-0.3.1::gentoo, installed)
>     media-libs/libpng:0/0= required by
> (net-print/cups-filters-1.0.36-r1::gentoo, installed)
>     media-libs/libpng:0/0= required by
> (kde-base/kdelibs-4.11.4::gentoo, installed)
> 
>   (media-libs/libpng-1.6.8::gentoo, ebuild scheduled for merge)
> pulled in by (no parents that aren't satisfied by other packages in
> this slot)
> 
> 
> My question is, seems upgrade to libpng-1.6.8 will solve the
> conflict, why emerge cannot proceed this automatically? or there are
> some switches to controller this?
> 
> Thanks a lot.

I had exactly the same weirdness after 1.6.8 was stabilized.  I waited
a few hours, re-synced the tree, and then updated without any warnings
about blocks;  the old libpng was unmerged and 1.6.8 was merged
automagically as one would expect.  I don't know what caused the problem
or what fixed it.