This module provides functionality to make windows "sticky" to a particular screen. When a window is marked as sticky on a screen, it will automatically follow that screen across workspace changes, staying visible even when you switch to a different workspace.

This is particularly useful for windows you want to keep visible at all times on a specific monitor, such as Picture-in-Picture videos, music players, communication apps, or reference documentation.

You can use this module with the following in your xmonad.hs:

import XMonad.Util.StickyWindows

To enable sticky windows, wrap your config with sticky:

main = xmonad $ … . sticky . … $ def { ... }

This adds the necessary hooks to manage sticky windows. Next, add keybindings to stick and unstick windows:

, ((modMask, xK_s), withFocused stick)
, ((modMask .|. shiftMask, xK_s), withFocused unstick)

Now you can:

1. Focus a window and press Mod-s to make it sticky to the current screen
2. Switch workspaces on that screen, and the sticky window will follow
3. Press Mod-Shift-s to unstick the window

Note that windows are sticky to a specific screen, not to all screens. If you have multiple monitors, a window marked sticky on screen 0 will only follow workspace changes on screen 0, not on other screens.

The sticky state persists across XMonad restarts.