It was discussed several times. for example: http://haskell.1045720.n5.nabble.com/Proposal-Pragma-EXPORT-tt5736547.html -- View this message in context: http://haskell.1045720.n5.nabble.com/Hiding-top-level-declaration-with-tilde-tp5741909p5741962.html Sent from the Haskell - Haskell-prime mailing list archive at Nabble.com.