Ubuntu Continuous Integration config framework.
Provide a framework to define configuration stacks. - Developers use a configuration as a simple dict, - Users define configurations in various files depending on their needs.
A stack provides a simple dict to developers by assembling user files and selecting the options where they are defined.
As an example, a user may have a configuration file in its home directory, one under /etc for system-wide defaults and one in a directory for specific options.