... Plugins . ... From the user's point of view, a plugin is either a standalone .py file or an .egg package. Trac looks for plugins in the global shared plugins directory (see Global Configuration ) and in the plugins directory of the local TracEnvironment . ... Plugins can also consist of a single .py file dropped directly into either the project's or the shared plugins directory. ... I.e. FastCgiConfig -initial-env TRAC_ENV=/var/lib/trac -initial-env PYTHON_EGG_CACHE=/var/lib/trac/plugin-cache . ...