Quoting rose@...:

> The installation of scipy-0.9.0-r2 is blocked by sage-4.7.1-r2,
> because 'emerge scipy' fails if numpy-1.5.1 and not numpy-1.6.1-r1 is
> installed. But the installation of numpy-1.6.1-r1 is blocked by
> sage-4.7.1-r2:
>
> root@impala:/root(2)# emerge -pvuDN world
> These are the packages that would be merged, in order:
> Calculating dependencies... done!
> [ebuild     U  ] sci-libs/scipy-0.9.0-r2 [0.9.0-r1] USE="doc -umfpack" 0 kB
> Total: 1 package (1 upgrade), Size of downloads: 0 kB
> WARNING: One or more updates have been skipped due to a dependency conflict:
> dev-python/numpy:0
>    (dev-python/numpy-1.6.1-r1::gentoo, ebuild scheduled for merge)
> conflicts with
>      ~dev-python/numpy-1.5.1 required by
> (sci-mathematics/sage-4.7.1-r2::sage-on-gentoo, installed)
> dev-python/pexpect:0
>    (dev-python/pexpect-2.4-r1::sage-on-gentoo, ebuild scheduled for
> merge) conflicts with
>      ~dev-python/pexpect-2.0 required by
> (sci-mathematics/sage-4.7.1-r2::sage-on-gentoo, installed)
>
> The restriction to numpy-1.5.1 was motivated with missing clapack_*
> symbols corresonding to Bug
> https://bugs.gentoo.org/show_bug.cgi?id=371099.
>
> But this issue seems to be solved now, comment 40 to Bug 371099.

I am not sure I understand your email fully. scipy-0.9.0-r2 doesn't require
numpy-1.6.1.
Indeed you cannot upgrade numpy to 1.6.1 but that doesn't prevent the 
merging of
anything. It is just a version constraint. It is unfortunate but that's 
the way
it is.

Do you absolutely need numpy-1.6 for something else than sage?

Francois