someFunction :: TypeRep -> Int
TypeRep share their keys using RTS internal allocation, can we get a function in
Data.Typeable (or even
GHC.Exts) that retrieves the Int key? Currently my job code (OpenAFP) and Pugs both uses
"show :: TypeRep -> String" as the key for Map, but I think it'd be much, much faster if either
TypeRep supports Ord natively, or (preferably) that we can get a Int out of it.