I've uploaded a new version of lhs2tex-hl [1] to hackage [2]. It includes:

1. It now builds on GHC 7.2.x

2. You can list the LaTeX commands you have to implement (with a default implementation) with lhs2TeX-hl --action=ListCommands

3. Binary operators should now be typeset correctly.

What does it do? It generates formatting statement for highlighting your Haskell code in your lhs2TeX compatible documents. Generate a fmt file with

> lhs2TeX-hl -o file.fmt file.lhs

and add the following to your lhs file:

%include file.fmt

Have fun

With kind regards,

Alessandro Vermeulen

[1] https://github.com/spockz/lhs2texhl

[2] http://hackage.haskell.org/package/lhs2TeX-hl