I have posted a message earlier about having a way to play with the environment in cfg files (http://www.nabble.com/zc.buildout-:-Playing-with-environment-in-cfg-files-td...)
we came up with a simple way to deal with this, using templates for our cfg files.
This reduces a lot the number of cfg files we need when we work over applications that are installed under win32 and developed by linux users for instance.
I would like to propose this enhancement for inclusion in zc.buildout if you think it's a good idea, to avoid maintaining another package on the top of zc.buildout.
I guess we could refactor it so it uses either simple string templates, either cheetah templates.