Qtile

Qtile is a full-featured, hackable tiling window manager written and configured in Python.

Enabling

To enable Qtile as your windowManager, set: services.xserver.windowManager.qtile.enable to true. For example:

/etc/nixos/configuration.nix

{ config, pkgs, ... }: 
  ...
  services.xserver.windowManager.qtile.enable = true;
  ...
}