depot/third_party/nixpkgs/nixos/modules/config/qt.nix

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{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.qt;
isQGnome = cfg.platformTheme == "gnome" && builtins.elem cfg.style ["adwaita" "adwaita-dark"];
isQtStyle = cfg.platformTheme == "gtk2" && !(builtins.elem cfg.style ["adwaita" "adwaita-dark"]);
isQt5ct = cfg.platformTheme == "qt5ct";
isLxqt = cfg.platformTheme == "lxqt";
isKde = cfg.platformTheme == "kde";
packages =
if isQGnome then [
pkgs.qgnomeplatform
pkgs.adwaita-qt
pkgs.qgnomeplatform-qt6
pkgs.adwaita-qt6
]
else if isQtStyle then [ pkgs.libsForQt5.qtstyleplugins pkgs.qt6Packages.qt6gtk2 ]
else if isQt5ct then [ pkgs.libsForQt5.qt5ct pkgs.qt6Packages.qt6ct ]
else if isLxqt then [ pkgs.lxqt.lxqt-qtplugin pkgs.lxqt.lxqt-config ]
else if isKde then [ pkgs.libsForQt5.plasma-integration pkgs.libsForQt5.systemsettings ]
else throw "`qt.platformTheme` ${cfg.platformTheme} and `qt.style` ${cfg.style} are not compatible.";
in
{
meta.maintainers = [ maintainers.romildo ];
imports = [
(mkRenamedOptionModule ["qt5" "enable" ] ["qt" "enable" ])
(mkRenamedOptionModule ["qt5" "platformTheme" ] ["qt" "platformTheme" ])
(mkRenamedOptionModule ["qt5" "style" ] ["qt" "style" ])
];
options = {
qt = {
enable = mkEnableOption (lib.mdDoc "Qt theming configuration");
platformTheme = mkOption {
type = types.enum [
"gtk2"
"gnome"
"lxqt"
"qt5ct"
"kde"
];
example = "gnome";
relatedPackages = [
"qgnomeplatform"
"qgnomeplatform-qt6"
["libsForQt5" "qtstyleplugins"]
["libsForQt5" "qt5ct"]
["lxqt" "lxqt-qtplugin"]
["libsForQt5" "plasma-integration"]
];
description = lib.mdDoc ''
Selects the platform theme to use for Qt applications.
The options are
- `gtk`: Use GTK theme with [qtstyleplugins](https://github.com/qt/qtstyleplugins)
- `gnome`: Use GNOME theme with [qgnomeplatform](https://github.com/FedoraQt/QGnomePlatform)
- `lxqt`: Use LXQt style set using the [lxqt-config-appearance](https://github.com/lxqt/lxqt-config)
application.
- `qt5ct`: Use Qt style set using the [qt5ct](https://sourceforge.net/projects/qt5ct/)
application.
- `kde`: Use Qt settings from Plasma.
'';
};
style = mkOption {
type = types.enum [
"adwaita"
"adwaita-dark"
"cleanlooks"
"gtk2"
"motif"
"plastique"
];
example = "adwaita";
relatedPackages = [
"adwaita-qt"
"adwaita-qt6"
["libsForQt5" "qtstyleplugins"]
["qt6Packages" "qt6gtk2"]
];
description = lib.mdDoc ''
Selects the style to use for Qt applications.
The options are
- `adwaita`, `adwaita-dark`: Use Adwaita Qt style with
[adwaita](https://github.com/FedoraQt/adwaita-qt)
- `cleanlooks`, `gtk2`, `motif`, `plastique`: Use styles from
[qtstyleplugins](https://github.com/qt/qtstyleplugins)
'';
};
};
};
config = mkIf cfg.enable {
environment.variables = {
QT_QPA_PLATFORMTHEME = cfg.platformTheme;
QT_STYLE_OVERRIDE = mkIf (! (isQt5ct || isLxqt || isKde)) cfg.style;
};
environment.profileRelativeSessionVariables = let
qtVersions = with pkgs; [ qt5 qt6 ];
in {
QT_PLUGIN_PATH = map (qt: "/${qt.qtbase.qtPluginPrefix}") qtVersions;
QML2_IMPORT_PATH = map (qt: "/${qt.qtbase.qtQmlPrefix}") qtVersions;
};
environment.systemPackages = packages;
};
}