{
  config,
  lib,
  pkgs,
  ...
}: {
  services.yabai = {
    enable = true;
    enableScriptingAddition = true;
    package = pkgs.unstable.yabai;
    config = {
      auto_balance = "off";
      focus_follows_mouse = "off";
      layout = "bsp";
      mouse_drop_action = "swap";
      mouse_follows_focus = "off";
      mouse_modifier = "off";
      window_animation_duration = "0.1";
      window_border = "on";
      window_border_blur = "on";
      window_border_width = "2";
      window_gap = "5";
      left_padding = "5";
      right_padding = "5";
      top_padding = "5";
      bottom_padding = "5";
      window_origin_display = "default";
      window_placement = "second_child";
      window_shadow = "float";
      active_window_border_color = "0xfff5c2e7";
      normal_window_border_color = "0xffcba6f7";
      external_bar = "all:32:0";
    };
    extraConfig = let
      rule = "yabai -m rule --add";
      ignored = app: builtins.concatStringsSep "\n" (map (e: ''${rule} app="${e}" manage=off sticky=off layer=above border=off'') app);
      unmanaged = app: builtins.concatStringsSep "\n" (map (e: ''${rule} app="${e}" manage=off'') app);
    in ''
      # auto-inject scripting additions
      yabai -m signal --add event=dock_did_restart action="sudo yabai --load-sa"
      sudo yabai --load-sa

      ${ignored ["JetBrains Toolbox" "Mullvad VPN" "Sip" "iStat Menus"]}
      ${unmanaged ["GOG Galaxy" "Steam" "System Settings"]}

      # etc.
      ${rule} manage=off border=off app="CleanShot"
      ${rule} manage=off sticky=on  app="OBS Studio"
    '';
  };

  services.skhd = {
    enable = true;
    skhdConfig = let
      yabai = lib.getExe config.services.yabai.package;
    in ''
      # WORKS WITH SIP ENABLED:
      # focus window
      cmd + ctrl - h : ${yabai} -m window --focus west
      cmd + ctrl - j : ${yabai} -m window --focus south
      cmd + ctrl - k : ${yabai} -m window --focus north
      cmd + ctrl - l : ${yabai} -m window --focus east
      # move window
      cmd + shift - h : ${yabai} -m window --warp west
      cmd + shift - j : ${yabai} -m window --warp south
      cmd + shift - k : ${yabai} -m window --warp north
      cmd + shift - l : ${yabai} -m window --warp east
      # toggle sticky/floating
      cmd + shift - s: ${yabai} -m window --toggle sticky --toggle float --toggle topmost
      cmd + shift - d: ${yabai} -m window --toggle float
      # rotate
      cmd + ctrl - e : ${yabai} -m space --balance
      cmd + ctrl - r : ${yabai} -m space --rotate 270
      # open terminal
      cmd + shift - return : ''${HOME}/.nix-profile/bin/wezterm-gui
      # restart yabai
      cmd + alt - r : launchctl kickstart -k "gui/''${UID}/org.nixos.yabai"

      # ONLY WORKS WITH SIP DISABLED:
      # fast focus space left/right
      ctrl - left  : ${yabai} -m space --focus prev
      ctrl - right : ${yabai} -m space --focus next
      # switch to space
      cmd + ctrl - 1 : ${yabai} -m space --focus 1
      cmd + ctrl - 2 : ${yabai} -m space --focus 2
      cmd + ctrl - 3 : ${yabai} -m space --focus 3
      cmd + ctrl - 4 : ${yabai} -m space --focus 4
      cmd + ctrl - 5 : ${yabai} -m space --focus 5
      cmd + ctrl - 6 : ${yabai} -m space --focus 6
      cmd + ctrl - 7 : ${yabai} -m space --focus 7
      cmd + ctrl - 8 : ${yabai} -m space --focus 8
      cmd + ctrl - 9 : ${yabai} -m space --focus 9
      cmd + ctrl - 0 : ${yabai} -m space --focus 10
      # send window to desktop and follow focus
      cmd + shift - 1 : ${yabai} -m window --space 1; ${yabai} -m space --focus 1
      cmd + shift - 2 : ${yabai} -m window --space 2; ${yabai} -m space --focus 2
      cmd + shift - 3 : ${yabai} -m window --space 3; ${yabai} -m space --focus 3
      cmd + shift - 4 : ${yabai} -m window --space 4; ${yabai} -m space --focus 4
      cmd + shift - 5 : ${yabai} -m window --space 5; ${yabai} -m space --focus 5
      cmd + shift - 6 : ${yabai} -m window --space 6; ${yabai} -m space --focus 6
      cmd + shift - 7 : ${yabai} -m window --space 7; ${yabai} -m space --focus 7
      cmd + shift - 8 : ${yabai} -m window --space 8; ${yabai} -m space --focus 8
      cmd + shift - 9 : ${yabai} -m window --space 9; ${yabai} -m space --focus 9
      cmd + shift - 0 : ${yabai} -m window --space 10; ${yabai} -m space --focus 10
    '';
  };
}