debian mentors/ glossary/ pbuilder
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pbuilder

pbuilder is a tool that allows you to build packages in a clean chroot, to attempt to simulate the conditions the package will have to build in on a Buildd.

It's main use is to check that the BuildDependencies of the package are correct.

A good pbuilder configuration can be found at http://blog.madism.org/index.php/2006/06/27/93-pbuilder-custom-configurations