Published at LXer:

Different GNU/Linux distributions provide incompatible systems for package management, and to date no one has quite figured out a foolproof way to get the best of them all. But where the alien utility tries to convert between major package formats, and Smart and Klik try to imagine new, universal forms of software installation, PackageKit has the more modest goal of supplying a universal front end that leaves the native package systems intact underneath. As Richard Hughes, the project lead for PackageKit, puts it, "PackageKit is a glue layer between the distro-specific parts, and some prettiness."

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