Re: [Haskell-cafe] Automatic derivation (TemplateHaskell?)

Here's the output from -ddump-splices (thanks Saizan for the tip). It's returning a1 instead of a0. ghci -fth -e '$( _derive_print_instance makeFunParser '"''"'Foo )' baz.hs -ddump-splices baz.hs:1:0: baz.hs:1:0: Splicing declarations derive makeFunParser 'Foo ======> baz.hs:30:3-28 instance {FunParser Main.Foo} where [] { parse = choice [(>>) (reserved ['F', 'o', 'o']) ((>>) (char '(') ((>>=) parse (\ a0 -> (>>) (char ')') (return (Main.Foo a1)))))] } baz.hs:30:3: Not in scope: `a1' -- http://wagerlabs.com/