h@togetic:~/xmonad/xmonad-0.5$ runhaskell Setup.lhs build
Preprocessing library xmonad-0.5...
Preprocessing executables for xmonad-0.5...
Building xmonad-0.5...

/tmp/ghc11570_0/ghc11570_3.hscpp:1:0:
    file name does not match module name `Mai22