Still some GHC trouble when building Haddock

Some days ago I reported a regression in GHC:

   http://www.haskell.org//pipermail/cvs-all/2006-March/046637.html

I've fixed Happy to produce correct code, so the 2nd problem mentioned is 
already solved. Nevertheless, the regression remains even in yesterday's GHC 
built from darcs HEAD (what's the right terminology here?). Shouldn't this be 
caught by the nightly builds somehow?

Cheers,
   S.