Re: [gentoo-catalyst] Python 3 support

[Brian Dolbec]

On Tue, 2013-05-21 at 12:33 +0200, Dmitry Selyutin wrote:
> Hello everyone!
>
> Since I'm going to reimplement catalyst in GSoC, I'd like to tell my
> opinion if it has some weight. :-)
> Some years have passed since Python 3 was created, and nowadays I
> think it is stable enough to select it. I'd rather thought about
> Python 2 compatibility than Python 3, since it seems to become a
> standart soon. To cut a long story short, I'd rather oriented to
> Python 3 than Python 2, though I prefer to use Python 2 nowadays. Of
> course compatibility will be one of main aims, but I see some benefit
> if we will choose Python 3 rather than Python 2, though users may
> successfully use catalyst with Python 2 in the future. It's just a
> proposal, so I'd like to hear your opinions. If you don't agree, we
> may rather think about Python 2.

Dmitry, It's not that I don't want it to be python3 compatible as an
afterthought.  For the same reason as i told you already.  Catalyst is a
python2 application and is working code.  It is better to fix all the
poor areas of the code first before migrating to python3.  Also, that
will fix some of the compatibility issues on it's own.  That way the
changes can be properly tested.  Changing the code to py3 will bring
enough bugs into the system on it's own.  It is far better to fix the
poor code first.

> Even more, I'd like to avoid some generators and provide this support
> manually: I've always hated generators, especially code generators
> (and GUI ones).
>
> What do you think about it?

Catalyst should not need to have 2to3 run on it's codebase in the ebuild
to be py3 compatible.  python2.6 and up are mostly py3 compatible
already.  Catalyst does not do anything wild that should need porting
between versions.  There are also a few tricks that can be done to
simplify compatibility without the need for conversion runs.



-- 
Brian Dolbec <dolsen@g.o>