273 lines
9.5 KiB
Nix
273 lines
9.5 KiB
Nix
{ config, lib, pkgs, ... }:
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let
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cfg = config.qt;
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# Map platform names to their packages.
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platformPackages = with pkgs; {
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gnome = [ qgnomeplatform qgnomeplatform-qt6 ];
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adwaita = [ qadwaitadecorations qadwaitadecorations-qt6 ];
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gtk = [ libsForQt5.qtstyleplugins qt6Packages.qt6gtk2 ];
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kde = [ libsForQt5.plasma-integration libsForQt5.systemsettings ];
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lxqt = [ lxqt.lxqt-qtplugin lxqt.lxqt-config ];
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qtct = [ libsForQt5.qt5ct qt6Packages.qt6ct ];
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};
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# Maps style names to their QT_QPA_PLATFORMTHEME, if necessary.
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styleNames = {
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gtk = "gtk2";
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qtct = "qt5ct";
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};
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# Maps known lowercase style names to style packages. Non-exhaustive.
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stylePackages = with pkgs; {
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bb10bright = libsForQt5.qtstyleplugins;
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bb10dark = libsForQt5.qtstyleplugins;
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cleanlooks = libsForQt5.qtstyleplugins;
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gtk2 = [ libsForQt5.qtstyleplugins qt6Packages.qt6gtk2 ];
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motif = libsForQt5.qtstyleplugins;
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cde = libsForQt5.qtstyleplugins;
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plastique = libsForQt5.qtstyleplugins;
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adwaita = [ adwaita-qt adwaita-qt6 ];
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adwaita-dark = [ adwaita-qt adwaita-qt6 ];
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adwaita-highcontrast = [ adwaita-qt adwaita-qt6 ];
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adwaita-highcontrastinverse = [ adwaita-qt adwaita-qt6 ];
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breeze = libsForQt5.breeze-qt5;
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kvantum =
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[ libsForQt5.qtstyleplugin-kvantum qt6Packages.qtstyleplugin-kvantum ];
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};
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in {
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meta.maintainers = with lib.maintainers; [ rycee thiagokokada ];
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imports = [
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(lib.mkChangedOptionModule [ "qt" "useGtkTheme" ] [ "qt" "platformTheme" ]
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(config:
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if lib.getAttrFromPath [ "qt" "useGtkTheme" ] config then
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"gtk"
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else
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null))
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];
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options = {
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qt = {
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enable = lib.mkEnableOption "Qt 5 and 6 configuration";
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platformTheme = let
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newOption = {
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name = lib.mkOption {
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type = with lib.types; nullOr str;
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default = null;
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example = "adwaita";
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relatedPackages = [
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"qgnomeplatform"
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"qgnomeplatform-qt6"
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"qadwaitadecorations"
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"qadwaitadecorations-qt6"
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[ "libsForQt5" "plasma-integration" ]
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[ "libsForQt5" "qt5ct" ]
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[ "libsForQt5" "qtstyleplugins" ]
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[ "libsForQt5" "systemsettings" ]
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[ "lxqt" "lxqt-config" ]
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[ "lxqt" "lxqt-qtplugin" ]
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[ "qt6Packages" "qt6ct" ]
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[ "qt6Packages" "qt6gtk2" ]
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];
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description = ''
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Platform theme to use for Qt applications.
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Some examples are
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`gtk`
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: Use GTK theme with
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[`qtstyleplugins`](https://github.com/qt/qtstyleplugins)
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`gtk3`
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: Use [GTK3 integration](https://github.com/qt/qtbase/tree/dev/src/plugins/platformthemes/gtk3)
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for file picker dialogs, font and theme configuration
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`adwaita`
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: Use Adwaita theme with
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[`qadwaitadecorations`](https://github.com/FedoraQt/QAdwaitaDecorations)
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`gnome` (deprecated)
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: Use GNOME theme with
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[`qgnomeplatform`](https://github.com/FedoraQt/QGnomePlatform).
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Is no longer maintained so prefer `adwaita`.
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`lxqt`
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: Use LXQt theme style set using the
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[`lxqt-config-appearance`](https://github.com/lxqt/lxqt-config)
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application
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`qtct`
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: Use Qt style set using
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[`qt5ct`](https://github.com/desktop-app/qt5ct)
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and [`qt6ct`](https://github.com/trialuser02/qt6ct)
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applications
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`kde`
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: Use Qt settings from Plasma
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'';
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};
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package = lib.mkOption {
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type = with lib.types; nullOr (either package (listOf package));
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default = null;
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example =
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lib.literalExpression "[pkgs.adwaita-qt pkgs.adwaita-qt6]";
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description = ''
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Theme package to be used in Qt5/Qt6 applications.
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Auto-detected from {option}`qt.platformTheme.name` if possible.
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See its documentation for available options.
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'';
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};
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};
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in lib.mkOption {
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type = with lib.types;
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nullOr
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(either (enum [ "gtk" "gtk3" "gnome" "adwaita" "lxqt" "qtct" "kde" ])
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(lib.types.submodule { options = newOption; }));
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default = null;
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description = ''
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Deprecated. Use {option}`qt.platformTheme.name` instead.
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'';
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};
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style = {
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name = lib.mkOption {
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type = with lib.types; nullOr str;
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default = null;
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example = "adwaita-dark";
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relatedPackages = [
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"adwaita-qt"
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"adwaita-qt6"
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[ "libsForQt5" "breeze-qt5" ]
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[ "libsForQt5" "qtstyleplugin-kvantum" ]
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[ "libsForQt5" "qtstyleplugins" ]
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[ "qt6Packages" "qt6gtk2" ]
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[ "qt6Packages" "qtstyleplugin-kvantum" ]
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];
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description = ''
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Style to use for Qt5/Qt6 applications. Case-insensitive.
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Some examples are
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`adwaita`, `adwaita-dark`, `adwaita-highcontrast`, `adwaita-highcontrastinverse`
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: Use the Adwaita style from
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[`adwaita-qt`](https://github.com/FedoraQt/adwaita-qt)
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`breeze`
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: Use the Breeze style from
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[`breeze`](https://github.com/KDE/breeze)
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`bb10bright`, `bb10dark`, `cde`, `cleanlooks`, `gtk2`, `motif`, `plastique`
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: Use styles from
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[`qtstyleplugins`](https://github.com/qt/qtstyleplugins)
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`kvantum`
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: Use styles from
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[`kvantum`](https://github.com/tsujan/Kvantum)
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'';
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};
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package = lib.mkOption {
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type = with lib.types; nullOr (either package (listOf package));
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default = null;
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example = lib.literalExpression "pkgs.adwaita-qt";
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description = ''
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Theme package to be used in Qt5/Qt6 applications.
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Auto-detected from {option}`qt.style.name` if possible.
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See its documentation for available options.
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'';
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};
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};
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};
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};
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config = let
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platformTheme = if (builtins.isString cfg.platformTheme) then {
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option = "qt.platformTheme";
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name = cfg.platformTheme;
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package = null;
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} else if cfg.platformTheme == null then {
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option = null;
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name = null;
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package = null;
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} else {
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option = "qt.platformTheme.name";
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name = cfg.platformTheme.name;
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package = cfg.platformTheme.package;
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};
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# Necessary because home.sessionVariables doesn't support mkIf
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envVars = lib.filterAttrs (n: v: v != null) {
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QT_QPA_PLATFORMTHEME = if (platformTheme.name != null) then
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styleNames.${platformTheme.name} or platformTheme.name
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else
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null;
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QT_STYLE_OVERRIDE = cfg.style.name;
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};
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envVarsExtra = let
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inherit (config.home) profileDirectory;
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qtVersions = with pkgs; [ qt5 qt6 ];
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makeQtPath = prefix:
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lib.concatStringsSep ":"
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(map (qt: "${profileDirectory}/${qt.qtbase.${prefix}}") qtVersions);
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in {
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QT_PLUGIN_PATH = "$QT_PLUGIN_PATH\${QT_PLUGIN_PATH:+:}"
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+ (makeQtPath "qtPluginPrefix");
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QML2_IMPORT_PATH = "$QML2_IMPORT_PATH\${QML2_IMPORT_PATH:+:}"
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+ (makeQtPath "qtQmlPrefix");
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};
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in lib.mkIf cfg.enable {
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assertions = [{
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assertion = platformTheme.name == "gnome" -> cfg.style.name != null
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&& cfg.style.package != null;
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message = ''
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`qt.platformTheme.name` "gnome" must have `qt.style` set to a theme that
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supports both Qt and Gtk, for example "adwaita", "adwaita-dark", or "breeze".
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'';
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}];
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warnings = (lib.lists.optional (platformTheme.option == "qt.platformTheme")
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"The option `qt.platformTheme` has been renamed to `qt.platformTheme.name`.")
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++ (lib.lists.optional
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(platformTheme.name == "gnome" && platformTheme.package == null)
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"The value `gnome` for option `${platformTheme.option}` is deprecated. Use `adwaita` instead.");
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qt.style.package = lib.mkIf (cfg.style.name != null)
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(lib.mkDefault (stylePackages.${lib.toLower cfg.style.name} or null));
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home = {
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sessionVariables = envVars;
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# home.sessionVariables does not support setting the same environment
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# variable to different values.
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# Since some other modules may set the QT_PLUGIN_PATH or QML2_IMPORT_PATH
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# to their own value, e.g.: fcitx5, we avoid conflicts by setting
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# the values in home.sessionVariablesExtra instead.
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sessionVariablesExtra = ''
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export QT_PLUGIN_PATH=${envVarsExtra.QT_PLUGIN_PATH}
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export QML2_IMPORT_PATH=${envVarsExtra.QML2_IMPORT_PATH}
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'';
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};
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# Apply theming also to apps started by systemd.
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systemd.user.sessionVariables = envVars // envVarsExtra;
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home.packages = (lib.findFirst (x: x != [ ]) [ ] [
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(lib.optionals (platformTheme.package != null)
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(lib.toList platformTheme.package))
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(lib.optionals (platformTheme.name != null)
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platformPackages.${platformTheme.name} or [ ])
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]) ++ (lib.optionals (cfg.style.package != null)
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(lib.toList cfg.style.package));
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xsession.importedVariables = [ "QT_PLUGIN_PATH" "QML2_IMPORT_PATH" ]
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++ lib.optionals (platformTheme.name != null) [ "QT_QPA_PLATFORMTHEME" ]
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++ lib.optionals (cfg.style.name != null) [ "QT_STYLE_OVERRIDE" ];
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};
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}
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