feature freeze exception for ipython 0.13

[Julian Taylor]

ipython upstream is planning to release a new version around the beginning of march
it will contain many important bugfixes but also many new features.
Upstream may provide a bugfix release for 0.12.1 to fix some important issues but it would still be better to get 0.13 in total.

Most important issue is that the disk format of their notebook has changed, so precise with 0.12 would release with a version which is not forward compatible with notebooks created with 0.13.
Most new features are related to the new notebook and qtconsole which was never released in an earlier ubuntu, the parts released earlier are mostly unchanged beyond what is already in precise.
I am currently using a daily build of ipython at work and privately and it will be well tested.

Please make a decision if 0.13 is acceptable and if yes when would be the latest date it can be added. Upstream hopes to have a release latest before PyCon (7.March I think)
The decision will have an influence whether upstream will make a bugfix only release or not.

[Scott Kitterman (kitterman)]

It seems like a reasonable thing to have. I think it would have to be in
before beta 2.

[Martin Pitt (pitti)]

Did you test this against the four reverse build depends / the reverse depends? I would like to know whether it introduces any new build failures or functionality breakages, in particular wrt. the notebook changes you mentioned.

Thanks!

-- precise/universe build deps on ipython:
matplotlib
nipype
pytango
yade
-- precise/universe amd64 deps on ipython:
accerciser
connectomeviewer
psychopy
pyqonsole
python-nipype
python-polybori
python-pytango
python-scrapy
python-spyderlib
python-sympy
rabbitvcs-core
science-distributedcomputing
science-numericalcomputation
yade

[Julian Taylor (jtaylor)]

0.13 does not break api's used in the rdepends so nothing should break. Most of them just use the embedding api.

nothing depends on the notebook yet, and the only package using the communication protocol (which has not changed) is spyder which works.

[Martin Pitt (pitti)]

Seems fine, please go ahead then. Approved.

[Thomas Kluyver (takluyver)]

We've reluctantly decided we're not going to be able to make 0.13 in time for the end of the month. We'd like to do a 0.12.1 bugfix release instead - I don't know what the procedure is to get that in?

Thanks to everyone for arranging this, and sorry we're not able to make use of the exception.

[Scott Kitterman (kitterman)]

Bug fix updates don't need an exception. Any developer can upload it.

[Stefano Rivera (stefanor)]

Closing this, the deadline we agreed on has already passed, and it's not expected to happen at all.