Soapbox is a preload (sandbox) library that allows restriction of processes to write only to those places you want. By preloading the Soapbox library (or using the provided soapbox-script), you can run programs and prevent certain modifications outside a safe path without necessarily ending those programs. Users would typically do a successful 'make install' to a safe path that doesn't break halfway and doesn't pollute their system. Soapbox is useful when building/installing packages and in case of build problems to report as much as possible of the cause.
