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

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{ config, lib, pkgs, ... }:
let
cfg = config.qt;
platformPackages = with pkgs; {
gnome = [ qgnomeplatform qgnomeplatform-qt6 ];
gtk2 = [ libsForQt5.qtstyleplugins qt6Packages.qt6gtk2 ];
kde = [ libsForQt5.plasma-integration libsForQt5.systemsettings ];
lxqt = [ lxqt.lxqt-qtplugin lxqt.lxqt-config ];
qt5ct = [ libsForQt5.qt5ct qt6Packages.qt6ct ];
};
stylePackages = with pkgs; {
bb10bright = [ libsForQt5.qtstyleplugins ];
bb10dark = [ libsForQt5.qtstyleplugins ];
cde = [ libsForQt5.qtstyleplugins ];
cleanlooks = [ libsForQt5.qtstyleplugins ];
gtk2 = [ libsForQt5.qtstyleplugins qt6Packages.qt6gtk2 ];
motif = [ libsForQt5.qtstyleplugins ];
plastique = [ libsForQt5.qtstyleplugins ];
adwaita = [ adwaita-qt adwaita-qt6 ];
adwaita-dark = [ adwaita-qt adwaita-qt6 ];
adwaita-highcontrast = [ adwaita-qt adwaita-qt6 ];
adwaita-highcontrastinverse = [ adwaita-qt adwaita-qt6 ];
breeze = [ libsForQt5.breeze-qt5 ];
kvantum = [ libsForQt5.qtstyleplugin-kvantum qt6Packages.qtstyleplugin-kvantum ];
};
in
{
meta.maintainers = with lib.maintainers; [ romildo thiagokokada ];
imports = [
(lib.mkRenamedOptionModule [ "qt5" "enable" ] [ "qt" "enable" ])
(lib.mkRenamedOptionModule [ "qt5" "platformTheme" ] [ "qt" "platformTheme" ])
(lib.mkRenamedOptionModule [ "qt5" "style" ] [ "qt" "style" ])
];
options = {
qt = {
enable = lib.mkEnableOption "" // {
description = ''
Whether to enable Qt configuration, including theming.
Enabling this option is necessary for Qt plugins to work in the
installed profiles (e.g.: `nix-env -i` or `environment.systemPackages`).
'';
};
platformTheme = lib.mkOption {
type = with lib.types; nullOr (enum (lib.attrNames platformPackages));
default = null;
example = "gnome";
relatedPackages = [
"qgnomeplatform"
"qgnomeplatform-qt6"
[ "libsForQt5" "plasma-integration" ]
[ "libsForQt5" "qt5ct" ]
[ "libsForQt5" "qtstyleplugins" ]
[ "libsForQt5" "systemsettings" ]
[ "lxqt" "lxqt-config" ]
[ "lxqt" "lxqt-qtplugin" ]
[ "qt6Packages" "qt6ct" ]
[ "qt6Packages" "qt6gtk2" ]
];
description = ''
Selects the platform theme to use for Qt applications.
The options are
- `gnome`: Use GNOME theme with [qgnomeplatform](https://github.com/FedoraQt/QGnomePlatform)
- `gtk2`: Use GTK theme with [qtstyleplugins](https://github.com/qt/qtstyleplugins)
- `kde`: Use Qt settings from Plasma.
- `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/)
and [qt6ct](https://github.com/trialuser02/qt6ct) applications.
'';
};
style = lib.mkOption {
type = with lib.types; nullOr (enum (lib.attrNames stylePackages));
default = null;
example = "adwaita";
relatedPackages = [
"adwaita-qt"
"adwaita-qt6"
[ "libsForQt5" "breeze-qt5" ]
[ "libsForQt5" "qtstyleplugin-kvantum" ]
[ "libsForQt5" "qtstyleplugins" ]
[ "qt6Packages" "qt6gtk2" ]
[ "qt6Packages" "qtstyleplugin-kvantum" ]
];
description = ''
Selects the style to use for Qt applications.
The options are
- `adwaita`, `adwaita-dark`, `adwaita-highcontrast`, `adawaita-highcontrastinverse`:
Use Adwaita Qt style with
[adwaita](https://github.com/FedoraQt/adwaita-qt)
- `breeze`: Use the Breeze style from
[breeze](https://github.com/KDE/breeze)
- `bb10bright`, `bb10dark`, `cleanlooks`, `gtk2`, `motif`, `plastique`:
Use styles from
[qtstyleplugins](https://github.com/qt/qtstyleplugins)
- `kvantum`: Use styles from
[kvantum](https://github.com/tsujan/Kvantum)
'';
};
};
};
config = lib.mkIf cfg.enable {
assertions =
let
gnomeStyles = [
"adwaita"
"adwaita-dark"
"adwaita-highcontrast"
"adwaita-highcontrastinverse"
"breeze"
];
in
[
{
assertion = cfg.platformTheme == "gnome" -> (builtins.elem cfg.style gnomeStyles);
message = ''
`qt.platformTheme` "gnome" must have `qt.style` set to a theme that supports both Qt and Gtk,
for example: ${lib.concatStringsSep ", " gnomeStyles}.
'';
}
];
environment.variables = {
QT_QPA_PLATFORMTHEME = lib.mkIf (cfg.platformTheme != null) cfg.platformTheme;
QT_STYLE_OVERRIDE = lib.mkIf (cfg.style != null) cfg.style;
};
environment.profileRelativeSessionVariables =
let
qtVersions = with pkgs; [ qt5 qt6 ];
in
{
QT_PLUGIN_PATH = map (qt: "/${qt.qtbase.qtPluginPrefix}") qtVersions;
QML2_IMPORT_PATH = map (qt: "/${qt.qtbase.qtQmlPrefix}") qtVersions;
};
environment.systemPackages =
lib.optionals (cfg.platformTheme != null) (platformPackages.${cfg.platformTheme})
++ lib.optionals (cfg.style != null) (stylePackages.${cfg.style});
};
}