Hello, Since we're discussing a proposal for the pretty package I would like to make another one: The proposal is to add the following to Text.PrettyPrint.HughesPJ: instance IsString Doc where fromString = text This allows users to use string literals as Doc values using the OverloadedStrings language extension. I would also like to add: instance Monoid Doc where mempty = empty mappend = (<>) If there's enough demand (because it's a lot of work) I can find out if this change breaks anything by analyzing pretty's direct reverse dependencies: http://bifunctor.homelinux.net/~roel/cgi-bin/hackage-scripts/revdeps/pretty-... to see if some of them define an orphaned instance for IsString or Monoid. The patch that implements this is attached to the ticket: http://hackage.haskell.org/trac/ghc/ticket/4378 Deadline: 2 weeks (Friday 22 October 2010) Regards, Bas