On Tue, Oct 5, 2010 at 07:09, Antoine Latter wrote:

The error message you're getting is pretty un-helpful - what's happened is that EMGM has declared that it is only compatible with template-haskell version 2.3, however GHC 6.12 ships with template-haskell version 2.4.

Exactly. EMGM has not been updated for a newer Template Haskell.

On Mon, Oct 4, 2010 at 11:36 PM, Hans Peter Würmli wrote:

Also I noticed that the last upload was version 0.3.1. Is the library still

...

under maintenance?

Yes, it is. Unfortunately, I have not had time recently to fix the TH issue. I do have a local repository with some changes that I worked on a while back. The changes include stripping the TH from the emgm package. It's a nasty dependency that often requires updating for every GHC update, since the syntax datatypes change. The big idea is to have the representation generation be in a separate package from the EMGM library. This way, EMGM itself is smaller and doesn't have to change to support new TH versions or other things. The other unfortunate aspect of EMGM's design is that I made the TH stuff quite complicated when I did it. So, it's not easy to maintain. I want to simplify it and clean it up. If you want to play with a TH-free version of EMGM, I can easily commit my current work to the Subversion repository or to GitHub. You can then create your representation yourself. But the other stuff may have to wait for a few weeks. Regards, Sean