[[!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) """]]