These are haskell bindings for the IPC protocol provided by the Sway wayland compositor.
Please note that this is alpha-quality code without a stable API. It was mainly written for personal use and to to play around with fancier type-level representation of simple protocols. It has not been tested against the i3 window manager for X11.
Consider using the mature i3ipc library instead.
See sway-ipc(7) for details about the protocol.
See sway-ipc/app/Main.hs for a usage example.