Upgrade to IPython 0.12

[kini]

We need to upgrade IPython to the shiny new thing. Well, not really - the shiny new thing was 0.11, and 0.12 is now stable. It's been mostly rewritten and is now a lot more modular, as I understand it. Definitely worth using in Sage.

apply:

1. trac_12719-scripts.patch​
2. trac_12719.patch​
3. trac_12719-move_to_preparser.patch​

Install IPython 0.12 (spkg coming soon...)

[jhpalmieri]

See #12167 for a related ticket: how we deal with IPython configuration files.

[fbissey]

Would be nice but we need some porting, here is what typically happen if you try to use ipython-0.12 with sage (we had several reports in sage-on-gentoo before I pinned down the version used by sage):

$ sage
----------------------------------------------------------------------
| Sage Version 4.7.2, Release Date: 2011-10-29                       |
| Type notebook() for the GUI, and license() for information.        |
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/bin/sage-ipython", line 19, in <module>
    from IPython.CrashHandler import CrashHandler
ImportError: No module named CrashHandler

[kini]

Yes, obviously :) I'm just making this ticket since it is absolutely must be an eventual goal for us and nobody else has made a ticket yet, even though IPython 0.12 has been out for about three months.

[fbissey]

To be honest Fernando Perez and I talked about it on the mailing list at the time of ipython 0.11 and I said I would tell him what happens when we use ipython 0.11+ with sage because he is interested. For various reason I haven't been able to go back to it. But some sage-on-gentoo users eventually got a taste of it when it finally landed in the portage tree.

So first hurdle: do something about the crash handling.

[mhansen]

I'm working on this now, and have made quite a bit of progress. As an added bonus, making the Sage customizations to IPython is quite a bit cleaner. I should hopefully be able to clean out the mess in sage/misc/preparser_ipython.py and sage/misc/interpreter.py .

[mhansen]

This will fix #4413.

[kini]

Great, I'm glad you're on the case! :)

[vbraun]

What about zmq/pyzmq? It would really add to the functionality and I'm interested in the parallel/cluster support. But, strictly speaking, its not necessary to run ipython. Its also used in the new notebook so maybe its time for it to become a standard package?

[kini]

CCing Jason as he expressed interest on sage-devel.

[jason]

mhansen: we'd love to see your work-in-progress if it's available somewhere. I just spent some time reading the IPython docs again and thinking about how we could use it to implement the notebook hub and worker processes.

[mhansen]

I've posted patches which let Sage work with IPython 0.12 as well as cleaning up some old messy code. These should be in a state where they're ready to review.

I haven't done anything with preparing an spkg yet.

[jason]

I've updated the instructions in the description. Please correct if I messed something up.