[OE-core] [PATCH 2/2] python-six: put python2/3 variant together

[richard.purdie at linuxfoundation.org]

On Tue, 2019-05-21 at 18:49 -0700, Khem Raj wrote:
> On Tue, May 21, 2019 at 2:44 PM <richard.purdie at linuxfoundation.org>
> wrote:
> > On Tue, 2019-05-21 at 22:59 +0200, Andreas Müller wrote:
> > > On Tue, May 21, 2019 at 8:38 PM <
> > > richard.purdie at linuxfoundation.org>
> > > wrote:
> > > > > No sorry mozjs uses old crap in their configurations scripts
> > > > > nobody
> > > > > else does (python which) and ask for python2 explicitly.
> > > > 
> > > > I've been giving this a bit more thought and its our intent to
> > > > try
> > > > and
> > > > remove python2 from OE-Core entirely so adding py2 modules back
> > > > seems
> > > > like a backwards step.
> > > > 
> > > > I think this will therefore need to go to one of the other
> > > > layers,
> > > > painful as that might be from an include perspective.
> > > Yeah a new burden out of thin air is born. You know what I do:
> > > Create
> > > my own layers and am happy as I am with my other layers.
> > > 
> > > Bye
> > 
> > Its not "out of thin air". It was discussed over two years ago when
> > we
> > started a plan of trying to remove python2 dependencies:
> > 
> > http://git.yoctoproject.org/cgit.cgi/poky/commit/?id=1fc2c9315faf65ea05fecf81450dd40b9a330435
> > 
> > This was in line with what upstream python recommended. Upstream
> > python
> > has made a clear statement on this too:
> > 
> > https://python3statement.org/
> > 
> > For a release that will ship 3 months before that deadline, it
> > seems
> > unreasonable to add this back to oe-core, no?
> > 
> 
> the EOL is expected to be Jan 2020, lets see what happens but I think
> it would be good for us
> to first switch default python to be python3 and then remove python2
> completely IMO, I do not
> see any major distro planning to drop py2 at the stroke of it going
> EOL as of now, situation might
> change in coming months but many of them haven't even switched
> defaults.

I don't think we need to switch our default, just be able to build say
oe-core without python/python2 in HOSTTOOLS and without needing python
2.7 in OE-Core either. 

> Its good that project is taking lead here but we might leave many
> users behind.

I suspect python2 will end up in a layer of its down which I'm fine
with, dependencies can then be clearly seen.

Cheers,

Richard