old_contents: from spack import *
  
  class PySetuptools(Package):
      """Easily download, build, install, upgrade, and uninstall Python packages."""
      homepage = "https://pypi.python.org/pypi/setuptools"
      url      = "https://pypi.python.org/packages/source/s/setuptools/setuptools-11.3.tar.gz"
  
      version('11.3.1', '01f69212e019a2420c1693fb43593930')
      version('16.0', '0ace0b96233516fc5f7c857d086aa3ad')
      version('18.1', 'f72e87f34fbf07f299f6cb46256a0b06')
      version('19.2', '78353b1f80375ca5e088f4b4627ffe03')
      version('20.5', 'fadc1e1123ddbe31006e5e43e927362b')
  
      extends('python')
  
      def install(self, spec, prefix):
          python('setup.py', 'install', '--prefix=%s' % prefix)
  
new_contents: from spack import *
  
  class PySetuptools(Package):
      """Easily download, build, install, upgrade, and uninstall Python packages."""
      homepage = "https://pypi.python.org/pypi/setuptools"
      url      = "https://pypi.python.org/packages/source/s/setuptools/setuptools-11.3.tar.gz"
  
      version('11.3.1', '01f69212e019a2420c1693fb43593930')
      version('16.0', '0ace0b96233516fc5f7c857d086aa3ad')
      version('18.1', 'f72e87f34fbf07f299f6cb46256a0b06')
      version('19.2', '78353b1f80375ca5e088f4b4627ffe03')
      version('20.5', 'fadc1e1123ddbe31006e5e43e927362b')
      version('20.6.7', '45d6110f3ec14924e44c33411db64fe6')
  
      extends('python')
  
      def install(self, spec, prefix):
          python('setup.py', 'install', '--prefix=%s' % prefix)
  
subject: Add version 2.6.7 of py-setuptools