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Plone 4, ZEO and tempstorage

This is reminder for myself and hopefully for other people too so that they don't have to waste several hours of valuable time looking for this simple piece of information.

If you have experience setting up Plone 3 with ZEO and tempstorage (so that your sessions won't disappear in the middle of hardcore content managing) you might have trouble setting up same kind of setup while using Plone 4.

Thanks to David Glick who enlightened  me that plone.recipe.zeoserver doesn't include whole Zope 2 in it's Python environment anymore. In this specific scenario this means that even though you have tempstorage in your eggs folder it isn't included in pythonpath when zeoserver part is being processed and this leads to below error message:

Error: could not load package tempstorage: No module named tempstorage
Package name: 'tempstorage'
File name: 'component.xml'
Package path: None
For help, use bin/zeo-server -h


Solution to this is to add this simple oneliner to your buildout.cfg zeoserver part:


[zeoserver]
...
eggs = tempstorage
...

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