[Xmonad] how can I have my defaultXPConfig in my Config.hs

Hello, I would like to have my custom myXPConfig in my Config.hs , to use with XPrompt , so that I can easily upgrade xmonad and keep all my conf there. (let's say have my favorite font) However I am not able to compile that way : runhaskell Setup.lhs build Preprocessing executables for xmonad-0.3... Building xmonad-0.3... [ 4 of 10] Compiling Config[boot] ( Config.hs-boot, nothing ) [ 9 of 10] Compiling Config ( Config.hs, dist/build/xmonad/xmonad-tmp/Config.o ) Config.hs:44:10: Ambiguous occurrence `borderWidth' It could refer to either `borderWidth', defined at Config.hs:108:0 or `borderWidth', imported from XMonadContrib.XPrompt at Config.hs:31:0-27 Anyone already tried that? Lobzang.