2008/12/5 Toshio Kuratomi <a.badger@xxxxxxxxx>: > Michael DeHaan wrote: >> >> This isn't a huge problem to those who are only developing on the latest >> Fedora, per-se (other than getting over the initial hump), but it's >> pretty bad for someone who wants to keep a single codebase across EL 4 >> (Python 2.3) and up, which I think a lot of us do. That gets to be >> darn impossible and we have to double our involvement with code because >> we essentially have to maintain a differently-compatible fork for each >> project. >> > This is a problem that hasn't been brought up before. We can keep > Fedora going on python-2.6, 2.7 (and 2.8 if it occurs) and gradually > move code close to py3.x-ish syntax by using the "from __future__ import > *" mechanism. But that doesn't help with older distros running > python-2.5 or less. I don't believe there's anyway around that, though. > > As we move to python-2.6+ w/ 3.x features we'll have this problem no > matter when we actually move to python-3. So we eventually (unless we > hold off on moving to python3 until python-2.6 is standard on all RHEL > releases) will be maintaining two trees of code no matter what. > > If we maintain a python2 package and a python3 package in one version of > Fedora we'll have even more work. Right now we can have an EL-5 and > Fedora-9&10 package that are compatible with 2.5. A different version > can run on Fedora11 with the syntax ported to python-2.6's understanding > of what 3.x will be like. If we have both python2-2.6 and python3-3.0 > in Fedora11 we'll have to maintain separate py2 and py3 packages for > every python module we ship as well. We should avoid this if we can. > > Note that I think this decision is only partially within the powers of > the Fedora Project to decide. If 80% of our upstream libraries move to > py3, we'll need to move to py3 sooner. If 80% refuse to move off of > py2, we can take our time working on migration code. > > -Toshio Maybe I am oversimplifying. But what about using 2.6+ (<3.0) and ensure that all code is compatible with 3. And still have 3 in parallel for those who want it. So we target 2.6+ , but have 3.0 there to ensure everything would work with it, and for early adopters/devs -- Fedora 9 : sulphur is good for the skin ( www.pembo13.com ) -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
