{ lib , pkgs , ... }: let plymouth = theme: { enable = true; themePackages = lib.mkForce [ (pkgs.adi1090x-plymouth-themes.override { selected_themes = [ theme ]; }) ]; theme = lib.mkForce theme; }; in { specialisation = { stable = { inheritParentConfig = true; configuration = { boot = { kernelPackages = lib.mkForce pkgs.linuxPackages; plymouth = plymouth "spinner_alt"; }; }; }; zen = { inheritParentConfig = true; configuration = { boot = { kernelPackages = lib.mkForce pkgs.linuxPackages_zen; plymouth = plymouth "flame"; }; }; }; }; }