I was able to get in touch with the author and I am discussing my use case with him. Thanks! On Thu, Nov 6, 2014 at 10:23 AM, Greg Weber wrote:

Should I be asking this question on a different mailing list such as ghc-devs?

On Wed, Nov 5, 2014 at 12:21 PM, Greg Weber wrote:

...

I would like to be able to retrieve user-supplied annotations in Template Haskell. The 7.8 user manual doesn't mention this ability. However, I see this Trac page:

https://ghc.haskell.org/trac/ghc/wiki/TemplateHaskell/Annotations

Where it appears that this feature may exist in 7.8. I will gladly tinker with annotations and update the user manual if someone will help me understand what the situation is.

On a related note, it looks like this patch pointed to from the Wiki page for annotations got ignored. Should i submit it to phabricator? https://ghc.haskell.org/trac/ghc/ticket/8460

Thanks, Greg Weber