[galaxy-dev] How to make toolshed tool to create dummy env.sh

Hi dev list, What is the simplest xml I can put into a tool_dependencies.xml for it to create a dummy env.sh in tool-dependency/tool/version/ ..../awef234243/env.sh And will this be sourced each time. Or does the dependency need to be some sort of "successfully install" status for it to be sourced? Ideally I would be elegant if there is a way to create this env.sh easily as it's the best way for a galaxy admin to manage the different versions of dependencies. Thanks, Kevin.