[XMonad] Prepare for switching to nix build for recompilation of xmonad

dotfiles/config/xmonad/default.nix

@@ -0,0 +1,6 @@
+let
+  pkgs = import <nixpkgs> { overlays = [ (import ./overlay.nix) ]; };
+  source = pkgs.lib.sourceByRegex ./. [
+    "xmonad.hs" "imalison-xmonad.cabal" "PagerHints.hs" "LICENSE"
+  ];
+in pkgs.haskellPackages.callCabal2nix "imalison-xmonad" source { }

dotfiles/config/xmonad/taffybar

@@ -1 +0,0 @@
-../taffybar/taffybar

dotfiles/config/xmonad/xmonad.hs

@@ -341,11 +341,13 @@ myTabConfig =
 rename newName = RN.renamed [RN.Replace newName]
 
 layoutsStart layout = (layout, [Layout layout])
+
 (|||!) (joined, layouts) newLayout =
     (joined ||| newLayout, layouts ++ [Layout newLayout])
 
 layoutInfo =
-  layoutsStart (rename "Columns" $ multiCol [1, 1] 2 0.01 (-0.5)) |||!
+  layoutsStart (rename "4 Columns" $ (multiCol [1, 1, 1] 2 0.0 (-0.5))) |||!
+  rename "3 Columns" (multiCol [1, 1] 2 0.01 (-0.5)) |||!
   rename "Large Main" (Tall 1 (3 / 100) (3 / 4)) |||!
   rename "2 Columns" (Tall 1 (3 / 100) (1 / 2)) |||!
   Accordion |||! simpleCross |||! myTabbed