Qualified names in TH?

[J. Garrett Morris]

I'm trying to write some Template Haskell code that (among other
things) manipulates IntSets.  So, for example, I'd like a splice to
generate a call to Data.IntSet.fromList.  However, I'm not sure how
IntSet will be imported in the target module.  Is there a way to
resolve the fully qualified name (or similar) to a TH Name, without
having to know how it's imported in the splicing module?  (The obvious
approach---mkName "Data.IntSet.fromList"---seems not to work in GHC
7.8.)

Thanks!

 /g

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