You do recall correctly; they are supposed to work together. We discovered that they didn't a few weeks ago. Iavor has updated his implementation of TypeLits in HEAD. I still have to update singletons, which I will now do. Expect this update later today. In the meantime, make sure you have a version of libraries/base pulled in the last 13 days, as you will need the updated TypeLits.
Richard
On Oct 29, 2012, at 5:46 AM, José Pedro Magalhães
Hi Iavor and Richard (CC ghc-users),
If I recall correctly, Richard designed his singletons package in such a way that it would interact nicely with Iavor's type-level literals. Now I find myself in a situation where I need to use both type-level literals and singletons (basically because I'm reflecting at the value level both naturals, strings, and more complicated datatypes). But I see that the declarations of entities such as Sing, SingI, etc., are duplicated in the singletons package (seeing that they are already in GHC 7.6 within GHC.TypeLits). My question is: how can I use these two together?
Thanks, Pedro