xmonad.hs:27:1: warning: [-Wtabs]
    Tab character found here, and in 130 further locations.
    Please use spaces instead.
   |
27 |         manageDocks 
   | ^^^^^^^^

xmonad.hs:141:14: warning: [-Wdeprecations]
    In the use of ‘defaultConfig’
    (imported from XMonad, but defined in XMonad.Config):
    Deprecated: "Use def (from Data.Default, and re-exported by XMonad and XMonad.Config) instead."
    |
141 |     xmonad $ defaultConfig
    |              ^^^^^^^^^^^^^

xmonad.hs:149:45: warning: [-Wdeprecations]
    In the use of ‘defaultConfig’
    (imported from XMonad, but defined in XMonad.Config):
    Deprecated: "Use def (from Data.Default, and re-exported by XMonad and XMonad.Config) instead."
    |
149 |                           , handleEventHook defaultConfig ]
    |                                             ^^^^^^^^^^^^^