add higher order 'dzen' function

The intent is that:

    main = dzen xmonad

should just work, and indeed it does now, for launching a cool status
bar with minimal effort.

XMonad/Config/Dons.hs

@@ -13,15 +13,12 @@
 module XMonad.Config.Dons where
 
 import XMonad
-import XMonad.Config
 import XMonad.Hooks.DynamicLog
 
-config :: XConfig
-config = defaultConfig
-    { borderWidth        = 2
-    , defaultGaps        = [(18,0,0,0)]
-    , terminal           = "term"
-    , normalBorderColor  = "#cccccc"
-    , focusedBorderColor = "#cd8b00"
-    , logHook            = dynamicLogDzen }
+donsMain :: IO ()
+donsMain = dzen $ \conf -> xmonad $ conf
+        { borderWidth        = 2
+        , terminal           = "term"
+        , normalBorderColor  = "#cccccc"
+        , focusedBorderColor = "#cd8b00" }
 

XMonad/Hooks/DynamicLog.hs

@@ -25,6 +25,7 @@ module XMonad.Hooks.DynamicLog (
     dynamicLogDzen,
     dynamicLogWithPP,
     dynamicLogXinerama,
+    dzen,
 
     pprWindowSet,
     pprWindowSetXinerama,
@@ -67,9 +68,31 @@ makeSimpleDzenConfig = do
   h <- spawnPipe "dzen2"
   return defaultConfig
            { defaultGaps = [(18,0,0,0)]
-           , logHook = dynamicLogWithPP defaultPP
+           , logHook = dynamicLogWithPP dzenPP
                                           { ppOutput = hPutStrLn h } }
 
+-- | 
+--
+-- Run xmonad with a dzen status bar set to some nice defaults. Output 
+-- it taken fromthe dynamicLogWithPP hook.
+--
+-- > main = dzen xmonad
+--
+-- The intent is that the avove config file should provide a nice status
+-- bar with minimal effort.
+--
+dzen :: (XConfig -> IO ()) -> IO ()
+dzen f = do
+  h <- spawnPipe ("dzen2" ++ " " ++ flags)
+  f $ defaultConfig
+           { defaultGaps = [(18,0,0,0)]
+           , logHook = dynamicLogWithPP dzenPP
+                          { ppOutput = hPutStrLn h } }
+ where
+    fg      = "'#a8a3f7'" -- n.b quoting
+    bg      = "'#3f3c6d'"
+    flags   = "-e '' -w 400 -ta l -fg " ++ fg ++ " -bg " ++ bg
+
 -- |
 -- An example log hook, print a status bar output to stdout, in the form:
 --