Problem parsing hi-boot files with ghc6.3

[George Russell]

ghc on Linux compiled from sources for the HEAD version downloaded on 16th February
from the read-only repository seems to be unable to parse the attached hi-boot file.
Specifically I get the message

DisplayTypes.hs:53:0:
     Failed to load interface for `DisplayView':
	Bad interface file: ./DisplayView.hi-boot
	    ./DisplayView.hi-boot:12:19: parse error on input `='
-------------- next part --------------
{- This is a boot version of DisplayView. -}
module DisplayView where







-- We need to at least force the kinds of the type variables to be right.
data  DisplayedView graph graphParms node nodeType nodeTypeParms arc arcType 
      arcTypeParms =
   NOTHING {
      graph :: graph,
      graphParms :: graphParms,
      node :: node GHC.Base.Int,
      nodeType :: nodeType GHC.Base.Int,
      nodeTypeParms :: nodeTypeParms GHC.Base.Int,
      arc :: arc GHC.Base.Int,
      arcType :: arcType GHC.Base.Int,
      arcTypeParms :: arcTypeParms GHC.Base.Int
      }