Hi Ross, on http://hackage.haskell.org/cgi-bin/hackage-scripts/package/fgl there are fgl-versions 5.3, 5.4.1.1 However, ghc-6.8.3 was shipped with fgl-5.4.2.0 fgl-5.4.2.0 exports more functions (ie. xdfsWith) and I would like to use it with other ghc versions, too. Could you upload fgl-5.4.2.0? Cheers Christian