[Python-Dev] backporting stdlib 2.7.x from pypy to cpython (original) (raw)

Brett Cannon brett at python.org
Fri Jun 8 20:29:08 CEST 2012


On Fri, Jun 8, 2012 at 2:21 PM, fwierzbicki at gmail.com <fwierzbicki at gmail.com

wrote:

On Fri, Jun 8, 2012 at 10:59 AM, Brett Cannon <brett at python.org> wrote: > R. David already replied to this, but just to reiterate: tests can always > get updated, and code that fixes a bug (and leaving a file open can be > considered a bug) can also go in. It's just stuff like code refactoring, > speed improvements, etc. that can't go into Python 2.7 at this point. Thanks for the clarification!

> If/until the stdlib is made into its own repo, should the various VMs > consider keeping a common Python 2.7 repo that contains nothing but the > stdlib (or at least just modifications to those) so they can modify in ways > that CPython can't accept because of compatibility policy? You could keep it > on hg.python.org (or wherever) and then all push to it. This might also be a > good way to share Python implementations of extension modules for Python 2.7 > instead of everyone maintaining there own for the next few years (although I > think those modules should go into the stdlib directly for Python 3 as > well). Basically this could be a test to see if communication and > collaboration will be high enough among the other VMs to bother with > breaking out the actual stdlib into its own repo or if it would just be a > big waste of time. I'd be up for trying this. I don't think it's easy to fork a subdirectory of CPython though - right now I just keep an unchanged copy of the 2.7 LIb in our repo (PyPy does the same, at least the last time I checked).

Looks like hg doesn't have support yet: http://stackoverflow.com/questions/920355/how-do-i-clone-a-sub-folder-of-a-repository-in-mercurial .

The only sane option I can see then is to keep doing what you and PyPy are doing and keep a copy of the stdlib, but now you all simply share the repo instead of keeping your own copies and possibly use subrepos to pull it into your own hg repos.

> P.S. Do we need a python-implementations mailing list or something for > discussing overall VM-related stuff among all VMs instead of always bringing > this up on python-dev? E.g. I wish I had a place where I could get all the > VM stakeholders' attention to make sure that importlib as it stands in > Python 3.3 will skip trying to import Python bytecode properly (or if the > VMs will simply provide their own setup function and that won't be a worry). > And I would have no problem with keeping it like python-committers in terms > of closed subscriptions, open archive in order to keep the noise low. I think a python-implementations list would be a fantastic idea - I sometimes miss multi-implementation discussions in python-dev, or at least come in very late.

If other people agree then I will get Barry to create it. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.python.org/pipermail/python-dev/attachments/20120608/47f84b91/attachment.html>



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