xmonad: set XF89Sleep to hibernate

.xmonad/xmonad.hs

@@ -175,7 +175,7 @@ promptTheme =
 -- Applications --
 ------------------
 
-brightnessDown, brightnessUp, browser, discord, editor, element, incognitoBrowser, iogBrowser, launcher, logseq, musicPlayer, obs, screenshot, signal, slack, myTerminal, volumeDown, volumeMute, volumeUp :: String
+brightnessDown, brightnessUp, browser, discord, editor, element, hibernate, incognitoBrowser, iogBrowser, launcher, logseq, musicPlayer, obs, screenshot, signal, slack, myTerminal, volumeDown, volumeMute, volumeUp :: String
 brightnessDown = "light -U 5"
 brightnessUp = "light -A 5"
 browser = "brave"
@@ -185,6 +185,7 @@ editor = "codium"
 element = "element-desktop"
 enableEDP1 = "xrandr --output eDP-1 --primary --auto --output HDMI-1 --off"
 enableHDMI1 = "xrandr --output eDP-1 --off --output HDMI-1 --primary --mode 3840x2160"
+hibernate = "sudo systemctl hibernate"
 incognitoBrowser = "brave -incognito"
 iogBrowser = "google-chrome-stable"
 launcher = "rofi -show drun"
@@ -229,7 +230,8 @@ myKeybinds =
     ("<XF86AudioMute>", spawn volumeMute),
     ("<XF86AudioRaiseVolume>", spawn volumeUp),
     ("<XF86MonBrightnessDown>", spawn brightnessDown),
-    ("<XF86MonBrightnessUp>", spawn brightnessUp)
+    ("<XF86MonBrightnessUp>", spawn brightnessUp),
+    ("<XF86Sleep>", spawn hibernate)
   ]
     -- Navigation
     ++ zipWith (makeKeybindZipper "M-" windowGo) htnsKeys dirs