On 05/01/2014 17:57, ÕŶ«ÑÇ 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.

libpng-1.5.17-r1 is latest stable version
libpng-1.6.8 is latest unstable version

I suspect you are probably running a stable system with several packages
marked unstable and one of those requires libpng-1.6.8

To check, please post

what is your ACCEPT_KEYWORDS in make.conf?

what is the output of

grep -r libpng /etc/portage/



--
Alan McKinnon
alan.mckinnon@gmail.com