usepackage 1.6.3-1 (amd64 binary) in ubuntu warty

utility to manage environment variables from within dotfiles
 Usepackage is a tool for managing the Unix environment for a multi-tool,
 multi-platform site. It is designed to simplify login scripts and allow
 administrators to control users' environments centrally. This tool should be
 considered primarily designed for sites where users have to deal with a number
 of different tools, or versions of tools, that are installed in different
 locations and require environment variables to be set. This is particularly a
 problem for developers, or anyone who has to manage a large toolset across
 multiple platforms (e.g. different versions of the Sun JDK which require
 various environment variables to be set correctly). One or more central
 configuration files control a number of different "packages" and their
 associated environment and dependencies for different platforms (this includes
 the standard PATH, MANPATH, and LD_LIBRARY_PATH variables). A single user
 command, use, can be invoked to source the appropriate environment information
 into the users' current shell.