old_contents: # -*- encoding:utf8 -*-
  """
  Methods for managing OS packages.
  
  An alternative package manager can be selected by settings the:
  ``deploy_package_manager`` env variable.
  
  Note: Different distributions/operating systems have different naming
  conventions for packages. For example Apache is referred to as apache on
  Debian systems but httpd on Redhat systems.
  
  Options:
  - debian (default) Debian package management tools (apt, dpkg etc)
  
  """
  from denim.environment import Proxy
  
  
  __proxy = Proxy('deploy_package_manager', globals(), 'debian')
  
  is_installed = __proxy.method('is_installed', False, doc=
  """
  Check if a particular package has been installed.
  
  :param name: name of the package to check for.
  
  """)
  
  install = __proxy.method('install', False, doc=
  """
  Install a package.
  
  :param name: name of the package to install.
  
  """)
  
  __all__ = __proxy.methods
  
new_contents: # -*- encoding:utf8 -*-
  """
  Methods for managing OS packages.
  
  An alternative package manager can be selected by settings the:
  ``deploy_package_manager`` env variable.
  
  Note: Different distributions/operating systems have different naming
  conventions for packages. For example Apache is referred to as apache on
  Debian systems but httpd on Redhat systems.
  
  Options:
  - debian (default) Debian package management tools (apt, dpkg etc)
  
  """
  from denim.environment import Proxy
  
  
  __proxy = Proxy('deploy_package_manager', globals(), 'debian')
  
  is_installed = __proxy.method('is_installed', False, doc="""
  Check if a particular package has been installed.
  
  :param name: name of the package to check for.
  
  """)
  
  install = __proxy.method('install', False, doc="""
  Install a package.
  
  :param name: name of the package to install.
  
  """)
  
  __all__ = __proxy.methods
  
subject: Fix pep8 violations