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If we don't use a traditional installer program, we must rely on Python's installation tools. Historically the distutils module provided this capability; however, core Python is switching to use of pip and the setuptools module upon which it is based for Python 3.4. A recent LWN article, Rationalizing Python packaging, describes the roadmap. Also see the Python Packaging User Guide and setuptools documentation.
Use of pip and setuptools means that if they are installed, the user may install OpenVisualizer and its Python dependencies with a single command, either pip-based or setup.py-based. Eventually, pip and setuptools will be included with Python, so the user will not be required to install them manually.
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