This page describes the new Darcs plugin which is experimental.
The Darcs plugin is useful if you would like to track changes to your Bcfg2 repository using a Darcs backend. Currently, it enables you to get revision information out of your repository for reporting purposes. Once the plugin is enabled, every time a client checks in, it will include the current repository revision in the reports/statistics.
You will need to install Darcs on the Bcfg2 server first. Once installed, simply add Darcs to your plugins line in /etc/bcfg2.conf:
[server] plugins = Base,Bundler,Cfg,...,Darcs