Re: Announcing Newt DB, the amphibious database

Jason Madden <[email protected]>
Newsgroups gmane.comp.web.zope.zodb
Message-ID <[email protected]>
> 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 Initially this was due to changes in BTrees 4, but that reason is no longer applicable.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

Jason

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