套件：cudf-tools（0.9-2 以及其他的）
command line tools for package upgrade problem descriptions
A CUDF document describe an upgrade problem, as faced by package managers in popular package-based GNU/Linux distributions.
A CUDF document consists of a package universe and of a user request. The package universe describes all packages known to the package manager, a subset of which (the package status) denotes the package being currently installed on the target machine. The user request denotes a change to the package status as requested by the user.
A CUDF document is naturally complemented by a solution describing the resulting package status (if any) implementing the user request, as found by a package manager.
This package contains command line tools to manipulate CUDF and related documents. In particular it contains cudf-check, which enables checking of document properties such as installation consistency and matching of problems with their solutions.