upgrading recipes with pinned versions breaks
If you use a version-in for a recipe and later try to use a newer version buildout aborts with an error. For example using a plone buildout with plone.recipe.plone pinned to 3.0.2 and changing that to 3.0.3 later gives this error:
Loading recipe 'plone.
An internal error occured due to a bug in either zc.buildout or in a
recipe being used:
(plone.recipe.plone 3.0.3 (/Users/
The only workaround I can find is to delete .installed.cfg.