i18n.inputMethod: add module

modules/i18n/input-method/default.nix

@@ -0,0 +1,102 @@
+{ config, pkgs, lib, ... }:
+
+with lib;
+let
+
+  cfg = config.i18n.inputMethod;
+
+  gtk2Cache = pkgs.runCommandLocal "gtk2-immodule.cache" {
+    buildInputs = [ pkgs.gtk2 cfg.package ];
+  } ''
+    mkdir -p $out/etc/gtk-2.0/
+    GTK_PATH=${cfg.package}/lib/gtk-2.0/ \
+      gtk-query-immodules-2.0 > $out/etc/gtk-2.0/immodules.cache
+  '';
+
+  gtk3Cache = pkgs.runCommandLocal "gtk3-immodule.cache" {
+    buildInputs = [ pkgs.gtk3 cfg.package ];
+  } ''
+    mkdir -p $out/etc/gtk-3.0/
+    GTK_PATH=${cfg.package}/lib/gtk-3.0/ \
+      gtk-query-immodules-3.0 > $out/etc/gtk-3.0/immodules.cache
+  '';
+
+in {
+  imports =
+    [ ./fcitx.nix ./fcitx5.nix ./hime.nix ./kime.nix ./nabi.nix ./uim.nix ];
+
+  options.i18n = {
+    inputMethod = {
+      enabled = mkOption {
+        type = types.nullOr
+          (types.enum [ "fcitx" "fcitx5" "nabi" "uim" "hime" "kime" ]);
+        default = null;
+        example = "fcitx";
+        description = ''
+          Select the enabled input method. Input methods is a software to input
+          symbols that are not available on standard input devices.
+          </para><para>
+          Input methods are specially used to input Chinese, Japanese and Korean
+          characters.
+          </para><para>
+          Currently the following input methods are available in Home Manager:
+
+          <variablelist>
+          <varlistentry>
+            <term><literal>fcitx</literal></term>
+            <listitem><para>
+              A customizable lightweight input method
+              extra input engines can be added using
+              <literal>i18n.inputMethod.fcitx.engines</literal>.
+            </para></listitem>
+          </varlistentry>
+          <varlistentry>
+            <term><literal>fcitx5</literal></term>
+            <listitem><para>
+              The next generation of fcitx,
+              addons (including engines, dictionaries, skins) can be added using
+              <literal>i18n.inputMethod.fcitx5.addons</literal>.
+            </para></listitem>
+          </varlistentry>
+          <varlistentry>
+            <term><literal>nabi</literal></term>
+            <listitem><para>
+              A Korean input method based on XIM. Nabi doesn't support Qt 5.
+            </para></listitem>
+          </varlistentry>
+          <varlistentry>
+            <term><literal>uim</literal></term>
+            <listitem><para>
+              The universal input method, is a library with a XIM bridge.
+              uim mainly support Chinese, Japanese and Korean.
+            </para></listitem>
+          </varlistentry>
+          <varlistentry>
+            <term><literal>hime</literal></term>
+            <listitem><para>An extremely easy-to-use input method framework.</para></listitem>
+          </varlistentry>
+          <varlistentry>
+            <term><literal>kime</literal></term>
+            <listitem><para>A Korean IME.</para></listitem>
+          </varlistentry>
+          </variablelist>
+        '';
+      };
+
+      package = mkOption {
+        internal = true;
+        type = types.nullOr types.path;
+        default = null;
+        description = ''
+          The input method method package.
+        '';
+      };
+    };
+  };
+
+  config = mkIf (cfg.enabled != null) {
+    home.packages = [ cfg.package gtk2Cache gtk3Cache ];
+  };
+
+  meta.maintainers = with lib; [ hm.maintainers.kranzes ];
+}

modules/i18n/input-method/fcitx.nix

@@ -0,0 +1,50 @@
+{ config, pkgs, lib, ... }:
+
+with lib;
+
+let
+  cfg = config.i18n.inputMethod.fcitx;
+  fcitxPackage = pkgs.fcitx.override { plugins = cfg.engines; };
+  fcitxEngine = types.package // {
+    name = "fcitx-engine";
+    check = x:
+      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: ${engines}.";
+      };
+    };
+
+  };
+
+  config = mkIf (config.i18n.inputMethod.enabled == "fcitx") {
+    i18n.inputMethod.package = fcitxPackage;
+
+    home.sessionVariables = {
+      GTK_IM_MODULE = "fcitx";
+      QT_IM_MODULE = "fcitx";
+      XMODIFIERS = "@im=fcitx";
+    };
+
+    systemd.user.services.fcitx-daemon = {
+      Unit = {
+        Description = "Fcitx input method editor";
+        PartOf = [ "graphical-session.desktop" ];
+      };
+      Service.ExecStart = "${fcitxPackage}/bin/fcitx";
+      Install.WantedBy = [ "graphical-session.target" ];
+    };
+  };
+
+}

modules/i18n/input-method/fcitx5.nix

@@ -0,0 +1,42 @@
+{ config, pkgs, lib, ... }:
+
+with lib;
+
+let
+  im = config.i18n.inputMethod;
+  cfg = im.fcitx5;
+  fcitx5Package = pkgs.fcitx5-with-addons.override { inherit (cfg) addons; };
+in {
+  options = {
+    i18n.inputMethod.fcitx5 = {
+      addons = mkOption {
+        type = with types; listOf package;
+        default = [ ];
+        example = literalExample "with pkgs; [ fcitx5-rime ]";
+        description = ''
+          Enabled Fcitx5 addons.
+        '';
+      };
+    };
+  };
+
+  config = mkIf (im.enabled == "fcitx5") {
+    i18n.inputMethod.package = fcitx5Package;
+
+    home.sessionVariables = {
+      GTK_IM_MODULE = "fcitx";
+      QT_IM_MODULE = "fcitx";
+      XMODIFIERS = "@im=fcitx";
+    };
+
+    systemd.user.services.fcitx5-daemon = {
+      Unit = {
+        Description = "Fcitx5 input method editor";
+        PartOf = [ "graphical-session.target" ];
+      };
+      Service.ExecStart = "${fcitx5Package}/bin/fcitx5";
+      Install.WantedBy = [ "graphical-session.target" ];
+    };
+  };
+
+}

modules/i18n/input-method/hime.nix

@@ -0,0 +1,23 @@
+{ config, pkgs, lib, ... }:
+
+with lib; {
+  config = mkIf (config.i18n.inputMethod.enabled == "hime") {
+    i18n.inputMethod.package = pkgs.hime;
+
+    home.sessionVariables = {
+      GTK_IM_MODULE = "hime";
+      QT_IM_MODULE = "hime";
+      XMODIFIERS = "@im=hime";
+    };
+
+    systemd.user.services.hime-daemon = {
+      Unit = {
+        Description = "Hime input method editor";
+        PartOf = [ "graphical-session.desktop" ];
+      };
+      Service.ExecStart = "${pkgs.hime}/bin/hime";
+      Install.WantedBy = [ "graphical-session.target" ];
+    };
+  };
+
+}

modules/i18n/input-method/kime.nix

@@ -0,0 +1,58 @@
+{ config, pkgs, lib, generators, ... }:
+with lib;
+let
+  cfg = config.i18n.inputMethod.kime;
+  yamlFormat = pkgs.formats.yaml { };
+in {
+  options = {
+    i18n.inputMethod.kime = {
+      config = mkOption {
+        type = yamlFormat.type;
+        default = { };
+        example = literalExample ''
+          {
+            daemon = {
+              modules = ["Xim" "Indicator"];
+            };
+
+            indicator = {
+              icon_color = "White";
+            };
+
+            engine = {
+              hangul = {
+                layout = "dubeolsik";
+              };
+            };
+          }
+        '';
+        description = ''
+          kime configuration. Refer to
+          <link xlink:href="https://github.com/Riey/kime/blob/develop/docs/CONFIGURATION.md"/>
+          for details on supported values.
+        '';
+      };
+    };
+  };
+
+  config = mkIf (config.i18n.inputMethod.enabled == "kime") {
+    i18n.inputMethod.package = pkgs.kime;
+
+    home.sessionVariables = {
+      GTK_IM_MODULE = "kime";
+      QT_IM_MODULE = "kime";
+      XMODIFIERS = "@im=kime";
+    };
+
+    xdg.configFile."kime/config.yaml".text =
+      replaceStrings [ "\\\\" ] [ "\\" ] (builtins.toJSON cfg.config);
+
+    systemd.user.services.kime-daemon = {
+      Unit = { Description = "Kime input method editor"; };
+      PartOf = [ "graphical-session.target" ];
+      Service.ExecStart = "${pkgs.kime}/bin/kime";
+      Install.WantedBy = [ "graphical-session.target" ];
+    };
+  };
+
+}

modules/i18n/input-method/nabi.nix

@@ -0,0 +1,23 @@
+{ config, pkgs, lib, ... }:
+
+with lib; {
+  config = mkIf (config.i18n.inputMethod.enabled == "nabi") {
+    i18n.inputMethod.package = pkgs.nabi;
+
+    home.sessionVariables = {
+      GTK_IM_MODULE = "nabi";
+      QT_IM_MODULE = "nabi";
+      XMODIFIERS = "@im=nabi";
+    };
+
+    systemd.user.services.nabi-daemon = {
+      Unit = {
+        Description = "Nabi input method editor";
+        PartOf = [ "graphical-session.desktop" ];
+      };
+      Service.ExecStart = "${pkgs.nabi}/bin/nabi";
+      Install.WantedBy = [ "graphical-session.target" ];
+    };
+  };
+
+}

modules/i18n/input-method/uim.nix

@@ -0,0 +1,45 @@
+{ config, pkgs, lib, ... }:
+
+with lib;
+
+let cfg = config.i18n.inputMethod.uim;
+in {
+  options = {
+
+    i18n.inputMethod.uim = {
+      toolbar = mkOption {
+        type = types.enum [ "gtk" "gtk3" "gtk-systray" "gtk3-systray" "qt4" ];
+        default = "gtk";
+        example = "gtk-systray";
+        description = ''
+          Selected UIM toolbar.
+        '';
+      };
+    };
+
+  };
+
+  config = mkIf (config.i18n.inputMethod.enabled == "uim") {
+    i18n.inputMethod.package = pkgs.uim;
+
+    home.sessionVariables = {
+      GTK_IM_MODULE = "uim";
+      QT_IM_MODULE = "uim";
+      XMODIFIERS = "@im=uim";
+    };
+
+    systemd.user.services.uim-daemon = {
+      Unit = {
+        Description = "Uim input method editor";
+        PartOf = [ "graphical-session.desktop" ];
+      };
+      Service.ExecStart = toString
+        (pkgs.writeShellScript "start-uim-xim-and-uim-toolbar" ''
+          ${pkgs.uim}/bin/uim-xim &
+          ${pkgs.uim}/bin/uim-toolbar-${cfg.toolbar}
+        '');
+      Install.WantedBy = [ "graphical-session.target" ];
+    };
+  };
+
+}