[gentoo-science] [sage-on-gentoo] sage(math) 6.8 is out

["François Bissey" <frp.bissey@gmail.com>]

And sage-on-gentoo has undergone a substantial change
during the development phase....

So what is different:
this is a monolithic ebuild, in the past we had split sage
in various components, the scripts, the sage-clib sage and
the documentation. Over the last year or two only the
separation of sage-clib was strictly necessary.

sage-clib being gone upstream we had an opportunity to house
everything under one roof. The separation was always
arbitrary as there is not much you can do with the scripts
without sage itself. Possibly you could have used sage from
python without needing the scripts (strictly speaking a couple
of files would probably need to be moved from one ebuild to
the other for it to work 100%).

The only things that are still separate are things that are
split in a different package upstream, sage-data packages.
Most of them cannot be used without sage and at least one is
needed for sage to start.

So when you move to sage-6.8 the following ebuilds will need
to go:
sage-baselayout
sage-clib
sage-doc or sage-doc-bin

Special notes:
* ntl 9.3.0: this version of sage moves to the latest version
of ntl. It is probably a good idea to rebuild the packages
depending on ntl (flint, singular, libsingular, eclib). Automatic
rebuild of some of them could have been triggered but I forgot to
add the subslot to the ntl ebuild that would have allowed that to
happen before it was pushed to the main tree by Thomas Kahle.

* x86 users will need to do some extra keywording for sage and 
sci-mathematics/rw. sci-mathematics/rw was kindly added to
the tree by Michael Orlitzky but it was only added with ~amd64
keyword. I know there are x86 users out there 
(https://github.com/cschwan/sage-on-gentoo/issues/352), so you can 
request the keyword
to be added the normal way in bugzilla. Once it is done, I'll keyword
sage ~x86 again (and repoman will let me do it).

- Yes, I know - those two problems would be easily solved if I
was a full blown Gentoo-dev.

* ~arch users. The recommended useflags for documentation are
"+bin-html -html -pdf". In the past we have encouraged people to
use sage-doc-bin rather than sage-doc. These flags reproduce
that particular set up. ~arch user in particular should adopt these
because the documentation will not build with sphinx 1.3.
There is a sage ticket to move to sphinx 1.3 but it is not ready
for inclusion yet.

* numpy 1.9 can be used to build sage but it causes doctest failures
and some behavior are not as expected, be cautious that things can 
happen if your are using numpy 1.9. It is merely allowed so it doesn't
block other packages wanting numpy 1.9 while I am working with upstreams
(both sage and numpy) to solve the various problems.

Happy upgrading.

Francois Bissey