nix/home/config/sway/module/Navigation.nix

{ ... }:
{
  text = ''
    # Move focus.
    bindsym --to-code $mod+a focus left
    bindsym --to-code $mod+d focus right
    bindsym --to-code $mod+s focus down
    bindsym --to-code $mod+w focus up

    # Move the focused window.
    bindsym --to-code $mod+Shift+a move left
    bindsym --to-code $mod+Shift+d move right
    bindsym --to-code $mod+Shift+s move down
    bindsym --to-code $mod+Shift+w move up

    # Focus mouse following.
    focus_follows_mouse yes
  '';
}