Re: Announcing Newt DB, the amphibious database

Jim Fulton <[email protected]>
Newsgroups gmane.comp.web.zope.zodb
Message-ID <CAPDm-FjWHzF_ZTHcdad=p_C3r2yjZoZGEescctiTxdT=CWDJCg@mail.gmail.com>
On Thu, Feb 23, 2017 at 8:46 AM, Jason Madden <[email protected]>
wrote:

>
> > On Feb 23, 2017, at 07:37, Mike Metcalfe <[email protected]> wrote:
> >
> > I'm trying to create a local instance with RelStorage but getting
> version/pinning issues when running buildout in a plone 4.3.10 instance. So
> far I've pinned:
> > transaction = 2.1.0
> > relstorage = 2.1a1
> >
> > With these pins the buildout completes successfully but now I cannot
> start the client, I get:
> >   File "/home/mike/instances/sqltlm/buildout-cache/eggs/
> RelStorage-2.1a1-py2.7-linux-x86_64.egg/relstorage/_compat.py", line 82,
> in <module>
> >     from ZODB._compat import BytesIO
> > ImportError: No module named _compat
> >
> > I'll keep going but do you (or anyone else) have a KGV dev buildout for
> plone 4.3.x?
>
> Plone 4.x requires ZODB3 and hence RelStorage 1.6. Initially this was due
> to changes in BTrees 4, but that reason is no longer applicable. It *may*
> be possible to get Plone 4.x to work with ZODB 5 and RelStorage 2, but
> you'd be in uncharted waters. The official work to make that happen is
> going on in Plone 6: https://www.starzel.de/blog/towards-plone-6


Oh man, I keep forgetting about this, because... ZODB3. Really?  I gather
ZODB3 is what debian distributes as well.

Of course, I get that this may be due to the BTree issue.  I'm disappointed
that this wasn't escalated years ago.  (It may have been and I didn't
appreciate it, but this is a major issue, people should have pushed this.)

So when I say newt works with Plone, I'm wrong because of this issue.
whimper.

It would be really great of current stable plone used current stable ZODB
and RelStorage. I wonder what that would take.

Jim









>
>
> Jason
>
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-- 
Jim Fulton
http://jimfulton.info

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