nichts/modules/style/qt.nix

{
  config,
  lib,
  pkgs,
  ...
}:
with lib; let
  theme = {
    package = pkgs.gruvbox-gtk-theme;
    name = "Gruvbox-Dark-BL";
  };
  cfg = config.modules.usrEnv.style.qt;
  inherit (config.modules.other.system) username;
in {
  config = mkIf cfg.enable {
    environment.sessionVariables = {QT_QPA_PLATFORMTHEME = "qt5ct";};

    environment.variables = {
      QT_STYLE_OVERRIDE = lib.mkForce "kvantum";
      GTK_THEME = theme.name;
    };

    # home-manager.users.${username} = {
    #   # This is taken from jacekpoz, thanks a lot!
    #   qt = {
    #     enable = true;
    #     style = {
    #       inherit (cfg) name;
    #       package = cfg.package.override {
    #         flavour = [cfg.variant];
    #         accents = [cfg.accentColor];
    #       };
    #     };
    #   };
    #   home = {
    #     packages = with pkgs; [
    #       qt5.qttools
    #       qt6Packages.qtstyleplugin-kvantum
    #       libsForQt5.qtstyleplugin-kvantum
    #       libsForQt5.qt5ct
    #     ];

    #     sessionVariables = {
    #       # Scaling factor for QT applications
    #       QT_AUTO_SCREEN_SCALE_FACTOR = "1";

    #       # Use wayland as the default backend.
    #       QT_QPA_PLATFORM = "wayland";

    #       # Disable window decorations for qt applications.
    #       QT_WAYLAND_DISABLE_WINDOWDECORATION = "1";

    #       # Remain compatible with QT5 whenever possible.
    #       DISABLE_QT_COMPAT = "0";

    #       # Tell Calibre to use the dark theme.
    #       CALIBRE_USE_DARK_PALETTE = "1";
    #     };
    #   };
    # };
  };
}