[Haskell-cafe] Issues with IO and FFIs

Does anyone have any comments on the following criticism of some difficulties with FFI, including IO, in Haskell: http://groups.google.com/group/comp.lang.functional/msg/6d650c086b2c8a49?hl=... In particular, is it not always possible to write IO libraries safely in Haskell? -- Dr Jon Harrop, Flying Frog Consultancy Ltd. http://www.ffconsultancy.com/?e