[Haskell-cafe] Standard way to translate Haskell to other languages?

[Joey]

I'm looking at writing a simple Haskell to Elm translator. Thankfully, 
the Elm compiler is in Haskell, so I'm just trying transforming syntax 
trees.

I'm wondering, is there a standard way to do this sort of thing? 
Template Haskell looked promising, but it seems there isn't much of a 
way to do introspection on function definition. Has there been any 
work/progress on this?

The GHC API seemed useful for compiling, but it seems tricky to use, and 
I haven't been able to find many tutorials for this sort of thing. I 
could just be looking in the wrong place.

What are the ways I could go about this? Are there any similar projects 
I could use as reference? What packages are useful for generating and 
manipulating Haskell ASTs? Does anybody have experience in this area 
they could share?

I've posted a similar question to the Haskell Reddit at 
http://www.reddit.com/r/haskell/comments/1u55rl/standard_way_to_translate_haskell_to_other/.

Thanks!

Joey Eremondi