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Guides on backward compatibility & deprecated practice
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``Setuptools`` has undergone tremendous changes since its first debut. As its
development continues to roll forward, many of the practice and mechanisms it
had established are now considered deprecated. But they still remain relevant
as a plethora of libraries continue to depend on them. Many people also find
it necessary to equip themselves with the knowledge to better support backward
compatibility. This guide aims to provide the essential information for such
objectives.

.. toctree::
    :maxdepth: 1

    python3
    python_eggs
    easy_install
    distutils-legacy
    functionalities
