{ ... }:

let
  preselect_selector = "class_g = 'Bspwm' && class_i = 'presel_feedback'";
in {
  services.picom = {
    enable = true;

    # fade = true;
    # fadeDelta = 3;

    shadow = true;
    shadowExclude = [
      "window_type *= 'menu'"
      "name = 'tint2'"
      preselect_selector
    ];

    opacityRules = [
      "10:${preselect_selector}" 
    ];

    vSync = true;
  };

  xsession.initExtra = "picom";
  xsession.windowManager.bspwm.settings.presel_feedback_color = "#ffffff";
}