{ config, lib, pkgs, ... }: with lib; let cfg = config.qt; in { meta.maintainers = [ maintainers.rycee ]; imports = [ (mkChangedOptionModule [ "qt" "useGtkTheme" ] [ "qt" "platformTheme" ] (config: if getAttrFromPath [ "qt" "useGtkTheme" ] config then "gtk" else null)) ]; options = { qt = { enable = mkEnableOption "Qt 4 and 5 configuration"; platformTheme = mkOption { type = types.nullOr (types.enum [ "gtk" "gnome" ]); default = null; example = "gnome"; relatedPackages = [ "qgnomeplatform" [ "libsForQt5" "qtstyleplugins" ] ]; description = '' Selects the platform theme to use for Qt applications.</para> <para>The options are <variablelist> <varlistentry> <term><literal>gtk</literal></term> <listitem><para>Use GTK theme with <link xlink:href="https://github.com/qt/qtstyleplugins">qtstyleplugins</link> </para></listitem> </varlistentry> <varlistentry> <term><literal>gnome</literal></term> <listitem><para>Use GNOME theme with <link xlink:href="https://github.com/FedoraQt/QGnomePlatform">qgnomeplatform</link> </para></listitem> </varlistentry> </variablelist> ''; }; }; }; config = mkIf (cfg.enable && cfg.platformTheme != null) { home.sessionVariables.QT_QPA_PLATFORMTHEME = if cfg.platformTheme == "gnome" then "gnome" else "gtk2"; home.packages = if cfg.platformTheme == "gnome" then [ pkgs.qgnomeplatform ] else [ pkgs.libsForQt5.qtstyleplugins ]; xsession.importedVariables = [ "QT_QPA_PLATFORMTHEME" ]; # Enable GTK+ style for Qt4 in either case. # It doesn’t support the platform theme packages. home.activation.useGtkThemeInQt4 = hm.dag.entryAfter [ "writeBoundary" ] '' $DRY_RUN_CMD ${pkgs.crudini}/bin/crudini $VERBOSE_ARG \ --set "${config.xdg.configHome}/Trolltech.conf" Qt style GTK+ ''; }; }