haskellPackages.xmobar: Enable separate bin output

pkgs/development/haskell-modules/configuration-nix.nix

···
   pvar = dontCheck super.pvar;
 
   kmonad = enableSeparateBinOutput super.kmonad;
+
+  xmobar = enableSeparateBinOutput super.xmobar;
 }

pkgs/top-level/all-packages.nix

···
 
   xlife = callPackage ../applications/graphics/xlife { };
 
-  xmobar = haskellPackages.xmobar;
+  xmobar = haskellPackages.xmobar.bin;
 
   xmonad-log = callPackage ../tools/misc/xmonad-log { };