GHC 6.4.1 barfs building haskell-src-exts on MingW/WinXP

Hello all, I'm trying to build haskell-src-exts-0.2 with GHC 6.4.1 under MingW on WinXP. It segfaults on the "runhaskell Setup.hs build" command (in the src/haskell-src-exts subdir). Does anyone else get this, or is it just me? sh-2.04$ runhaskell Setup.hs build -v5 Preprocessing library haskell-src-exts-0.2... c:\happy\happy-1.13\bin\happy.exe -agc -oLanguage\Haskell\Hsx\Parser.hs Language\Haskell\Hsx\Parser.ly shift/reduce conflicts: 5 Building haskell-src-exts-0.2... [segfault: instruction at 0 ref'd memory at 0] sh-2.04$ How do I modify the Cabal setup to get GHC -v output (so I can see which module it fails on)? Alistair.