nichts/modules/style/gtk.nix

{
  config,
  lib,
  pkgs,
  ...
}: let
  inherit (lib.options) mkOption mkEnableOption;
  inherit (lib.types) str package;
  inherit (lib.modules) mkIf;
  cfg = config.modules.theming.gtk;
in {
  options.modules.theming.gtk = {
    enable = mkEnableOption "Wether to enable GTK theming";
    theme = {
      name = mkOption {
        description = "The GTK theme name";
        default = "Gruvbox-Dark-BL";
        type = str;
      };
      package = mkOption {
        description = "The GTK theme package";
        default = pkgs.gruvbox-gtk-theme;
        type = package;
      };
    };
    iconTheme = {
      description = "The GTK icon theme";
      name = mkOption {
        description = "The GTK icon theme name";
        default = "Papirus-Dark";
        type = str;
      };
      package = mkOption {
        description = "The GTK icon theme package";
        default = pkgs.papirus-icon-theme;
        type = package;
      };
    };
  };
  config = mkIf cfg.enable {
    # NOTE: we need this or gtk breaks
    programs.dconf.enable = true;

    environment = {
      systemPackages = builtins.attrValues {
        inherit
          (pkgs)
          gruvbox-gtk-theme
          papirus-icon-theme
          ;
      };
      variables = let
        cursorSize = 32;
      in {
        GTK_THEME = "Gruvbox-Dark";
        XCURSOR_THEME = "BreezeX-RosePine-Linux";
        XCURSOR_SIZE = cursorSize;

        HYPRCURSOR_THEME = "BreezeX-RosePine-Linux";
        HYPRCURSOR_SIZE = cursorSize;
      };
    };
  };
}