{ pkgs, ... }: {

  home-manager.users.grape.services.picom = {
    enable = true;
    backend = "glx";
    vSync = false; # disable vsync to reduce input delay
    extraArgs = [ "-b" "--experimental-backends" ]; # enable deamon mode and experimental backends for blur

    settings = {

      # Blurring
      blur-method = "dual_kawase";
      blur-size = 12;
      blur-strength = 9;
      blur-background = true;
      blur-kern = "3x3box";

      blur-background-exclude = [
        "window_type = 'dock'"
        "window_type = 'desktop'"
        "_GTK_FRAME_EXTENTS@:c"
        "class_g ~= 'slop'"
        "class_g ~= 'Peek'"
      ];

      opacity-rule = [
        "80:class_g *= 'st'"
        "80:class_g *= 'kitty'"
        "80:class_g *= 'alacritty'"
        "80:class_g *= 'Alacritty'"
        "90:class_g *= 'jamesdsp'"
        "90:class_g *= 'polybar'"
        "80:class_g *= 'codium'"
        "80:class_g *= 'Rofi'"
        "80:class_g *= 'lutris'"
        "80:class_g *= 'Mumble'"
        "80:class_g *= 'Feishin'"
        "80:class_g *= 'feishin'"
        "80:class_g *= 'Element'"
        "85:class_g *= 'Logseq'"
        "85:class_g *= 'Codium'"
      ];

      # rounding
      corner-radius = 15;
      round-borders = 1;
      use-damage = false;

      inactive-opacity = 1.0;
      frame-opacity = 1.0;
      inactive-opacity-override = false;

    };
  };
}