Uli Fouquet wrote:
during grok development we recently experienced some trouble with the
zope.app.error package. We distribute the list on
`http://download.zope.org/distribution` as sources list for grokproject,
so that projects created with that tool, by default lookup this list for
available eggs/packages.

Actually, what happens is that buildout/setuptools will go there for *extra* links. It will always go to the package index first.

On this list the 3.5.1 release of zope.app.error is missing (older
releases are available), which makes projects created with grokproject
using an older release of zope.app.error, which in turn leads to errors.
A bit annoying.

This can't be the reason for buildout using an older version. buildout should by default go to the simple PyPI index, which clearly has zope.app.error 3.5.1 http://pypi.python.org/simple/zope.app.error.

To understand the sources lookup process better, I would like to know:

Is there a special reason, why zope.app.error 3.5.1 is not listed on the
above distribution list (while older versions are listed)?

I don't think we should continue uploading stuff to http://download.zope.org/distribution.

What is the recommended sources list for looking up zope eggs during
buildout, anyway?

I wish we wouldn't have to specify http://download.zope.org/distribution at all in our buildout.cfg. I think we're close to this point.

There is at least also the `ppix` 'listing' on
download.zope.org (which already provides zope.app.error 3.5.1). What's
the difference in terms of completeness and up-to-dateness of listed

http://download.zope.org/distribution is just a flat directory that svn committers can upload files to. It's used by buildout/setuptools as a "find-links" parameters. ppix is a *package index*, a mirror of the simple PyPI index to be precise.

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