&gt;GHC 6.6.1 packages are in Haskell Unsafe (amd64 only, although you can<br>&gt;build the source on your arch if you want (please let me know if you try<br>&gt;this, regardless of whether it succeeds or fails)):<br>I&#39;ve succesfully built GHC 
6.6.1 from source package on my i386—it works, though I didn&#39;t try to build something serious with it, because of need for recompiling all installed haskell libraries with new GHC version.<br>