old_contents: from setuptools import setup, find_packages
  
  
  def readme():
      with open('README.rst') as f:
          return f.read().strip()
  
  
  def version():
      with open('VERSION') as f:
          return f.read().strip()
  
  
  def requirements():
      with open('requirements.txt') as f:
          return f.read().strip().split('\n')
  
  
  def classifiers():
      with open('classifiers.txt') as f:
          return f.read().strip().split('\n')
  
  
  setup(name='scikit-gstat',
        license='MIT License',
        version=version(),
        author='Mirko Maelicke',
        author_email='mirko.maelicke@kit.edu',
        description='Geostatistical expansion in the scipy style',
        long_description=readme(),
        long_description_content_type='text/x-rst',
        classifiers=classifiers(),
        install_requires=requirements(),
        test_suite='nose.collector',
  #      test_require=['nose'],
        packages=find_packages(),
        include_package_data=True,
        zip_safe=False
  )
new_contents: from setuptools import setup, find_packages
  
  
  def readme():
      with open('README.rst') as f:
          return f.read().strip()
  
  
  def version():
      with open('VERSION') as f:
          return f.read().strip()
  
  
  def requirements():
      with open('requirements.txt') as f:
          return f.read().strip().split('\n')
  
  
  def classifiers():
      with open('classifiers.txt') as f:
          return f.read().strip().split('\n')
  
  
  setup(name='scikit-gstat',
        license='MIT License',
        version=version(),
        author='Mirko Maelicke',
        author_email='mirko.maelicke@kit.edu',
        description='Geostatistical expansion in the scipy style',
        long_description=readme(),
        long_description_content_type='text/x-rst',
        classifiers=classifiers(),
        install_requires=requirements(),
        test_suite='nose.collector',
        # test_require=['nose'],
        extras_require={"gstools": ["gstools>=1.3"]},
        packages=find_packages(),
        include_package_data=True,
        zip_safe=False
  )
  
subject: add gstools as optional dependency