[oe] python 2.6 warning

[Richard Purdie]

On Mon, 2009-05-11 at 16:19 +0200, Marcin Juszkiewicz wrote:
> Dnia poniedziałek, 11 maja 2009 o 11:22:56 Robert Schuster napisał(a):
> > Hi all,
> > those who are using bitbake with Python 2.6 (e.g. Ubuntu 09.04,
> > Debian sid) will notice this warning:
> >
> > /home/rschus/oe/bitbake/lib/bb/COW.py:29: DeprecationWarning: the
> > sets module is deprecated
> >   import types, sets
> >
> > Is anyone from OE in the know how to fix that properly? I know its
> > only a warning but imagine an OE newbie reading this .... I would
> > like to fix it myself but even after years of contributing to OE my
> > Pyhton skills are severely limited. :|
> 
> BitBake trunk has it fixed by me. Backporting to 1.8.x and to 
> stable/2009 are on my todolist. And yes - it works fine with Python 2.5 
> and even should with Python 2.4 which is minimal required version 
> (should works with 2.3 but we do not support it).

It won't work with 2.3 but we don't care about 2.3, it will work with
2.4 onwards. I have no idea why we were using long deprecated stuff :/.

I've backported it to bitbake 1.8 and it seems to work along with
merging a number of fixes lurking in Poky.

I'm also intending to merge the virtual class extension stuff soon
unless anyone has a major objection (none were raised previously when I
proposed this).

Cheers,

Richard