[[!comment format=mdwn
 username="joey"
 subject="""comment 2"""
 date="2017-01-26T06:50:39Z"
 content="""
A worked example:

	server :: Property Debian
	server = property' "some description" $ \w -> do
		os <- getOS
		hostname <- asks hostName
		ensureProperty w $
			File.hasContent "/etc/apt/sources.list.d/matrix.list"
				(genSourcesList os hostname)
"""]]
