Re: [Haskell-cafe] Arrows for invertible programming: Notation question

Is this something that can be compiled with GHC right now? I noticed - fgenerics but I think it does something else entirely.

GH is a pre-compiler that takes GH code to Haskell code, so this is a two-step process. -fgenerics turns derivable type classes on (see "Derivable type classes", Ralf Hinze and Simon Peyton Jones, Haskell Workshop 2000, pp94-105). The two are different but related ... Cheers, Ralf