A new response has been given to the issue **Unpin Cheetah**
in the tracker **Issue tracker** by **Maurits van Rees**.
Unpin Cheetah (http://plone.org/products/zopeskel/issues/45)
I cannot reproduce this. Also, I would not expect such a
VersionConflict error when running bin/zopeskel, but when
easy_installing it or when running a buildout that installs it.
Several people ran into problems *without* this version pin in
October last year. The reason Cheetah is pinned to 2.2.1 as a
maximum, is because later versions have a dependency on Markdown.
And Markdown depends on elementtree, but does not specify this.
This only bytes you python2.4 though, as elementtree is already
included in python2.5 and higher by default (in the xml.etree
Ah, but this has been fixed in the latest Markdown 2.0.3.
Easy_installing that version with python2.4 works, where earlier
versions gave an error on install: markdown.MarkdownException:
Failed to import ElementTree
So it should be fine to remove the version pin in ZopeSkel now.
One possible snag is that Plone 3 lists Markdown 1.7 in the
versions.cfg, so a buildout that installs Plone 3 and ZopeSkel
(for example the Universal Installer) might result in a broken
buildout. Indeed, I get this output when I try it:
Got Cheetah 18.104.22.168.
The version, 1.7, is not consistent with the requirement,
Error: Bad version 1.7
That is fixable by adding Cheetah=2.2.1 to the [versions] section
in the buildout.cfg (the reverse of what you want to do in
ZopeSkel) or by overriding Plone's versions.cfg to pin
In short, removing the version pin for Cheetah from the setup.py
of ZopeSkel would fix your problem, but it would introduce
problems for others (and perhaps to you as well). You could say
the new problems are slightly preferable as they can at least be
fixed by changing a buildout config instead of needing to hack in
the setup.py file of a released egg if you want to fix it
But your error still seems weird. Can you try installing ZopeSkel
in a clean virtualenv? If that works, can you try figuring out
where that Cheetah 22.214.171.124 version is coming from, which package
depends on that?
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