setup.py

import distro
import platform
from setuptools import setup, find_packages

el7 = {
    'requires': [
        'python36-packaging',
        'python36-pyparsing',
    ],
}

el8 = {
    'requires': [
        'python3-packaging',
        'python3-pyparsing',
    ],
}

options = { 'bdist_rpm': {} }
if platform.system() == 'Linux':
    if distro.id() == 'rhel' or 'rhel' in distro.like().split():
        if distro.major_version == '7':
            options['bdist_rpm']['requires'] = el7['requires']
        else:
            options['bdist_rpm']['requires'] = el8['requires']

setup(
      include_package_data = True,
      description = 'An external node classifier for use with configuration management tools such as salt.',
      data_files = [
          ('share/nodeclass/salt/modules/pillar', ['external/salt/modules/pillar/nodeclass.py']),
          ('share/nodeclass/salt/modules/tops', ['external/salt/modules/tops/nodeclass.py']),
      ],
      options = options,
     )