Issue 21: StackSet.hs does not compile with Hugs or Yhc http://code.google.com/p/xmonad/issues/detail?id=21 Comment #6 by SpencerJanssen: Yhc has too many bugs to keep up with StackSet development. WontFix this bug until Yhc's pattern guards support is better. Issue attribute updates: Status: WontFix -- You received this message because you are listed in the owner or CC fields of this issue, or because you starred this issue. You may adjust your issue notification preferences at: http://code.google.com/hosting/settings