This is a cupt library implementing front-end to dpkg.

provides:
- parsing and manipulating configuration info;
- parsing indexes metadata info;
- version strings comparison;
- inspection of the binary and source package' versions;
- parsing and querying info about installed packages;
- parsing and working with relations and relation expressions;
- download manager and downloaders for some schemes;
- problem resolver;
- worker for modifying system state.
see also description of 'cupt' package for more information.