nixpkgs/nixos/modules/i18n/input-method/fcitx.nix

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{ config, pkgs, lib, ... }:
with lib;
let
cfg = config.i18n.inputMethod.fcitx;
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fcitxPackage = pkgs.fcitx.override { plugins = cfg.engines; };
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fcitxEngine = types.package // {
name = "fcitx-engine";
check = x: (lib.types.package.check x) && (attrByPath ["meta" "isFcitxEngine"] false x);
};
in
{
options = {
i18n.inputMethod.fcitx = {
engines = mkOption {
type = with types; listOf fcitxEngine;
default = [];
example = literalExample "with pkgs.fcitx-engines; [ mozc hangul ]";
description =
let
enginesDrv = filterAttrs (const isDerivation) pkgs.fcitx-engines;
engines = concatStringsSep ", "
(map (name: "<literal>${name}</literal>") (attrNames enginesDrv));
in
"Enabled Fcitx engines. Available engines are: ${engines}.";
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};
};
};
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config = mkIf (config.i18n.inputMethod.enabled == "fcitx") {
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i18n.inputMethod.package = fcitxPackage;
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environment.variables = {
GTK_IM_MODULE = "fcitx";
QT_IM_MODULE = "fcitx";
XMODIFIERS = "@im=fcitx";
};
services.xserver.displayManager.sessionCommands = "${fcitxPackage}/bin/fcitx";
};
}