setup(name='MyPackage', description='This is my package', packages=[
    'mypackage', 'mypackage.subpackage'], version='1', url=
    'http://www.mypackage.org/', author='Me', author_email='me@here.com',
    script_name='./build/setup.py', data_files=['./build/setup.py'])
How can I get my setup.py to use a relative path to my files?