home/fcitx5: install material icons theme

home/services/fcitx5.nix

@@ -15,11 +15,12 @@ in
   };
 
   xdg.configFile = let
-    format = pkgs.formats.ini { };
+    format = pkgs.formats.iniWithGlobalSection { };
   in {
     "fcitx5/profile" = {
       force = true;
       source = format.generate "fcitx5-profile" {
+        sections = {
           "Groups/0" = {
             Name = "Default";
             "Default Layout" = "us";
@@ -42,8 +43,10 @@ in
           };
         };
       };
+    };
 
     "fcitx5/config".source = format.generate "fcitx5-config" {
+      sections = {
         Hotkey = {
           # Enumerate when press trigger key repeatedly
           EnumerateWithTriggerKeys = "True";
@@ -110,6 +113,21 @@ in
       };
     };
 
+    "fcitx5/conf/classicui.conf".source = format.generate "fcitx5-classicui.conf" {
+      globalSection = {
+        Theme = "Material-Color";
+        PerScreenDPI = "True";
+        # Font = "";
+        "Vertical Candidate List" = "True";
+      };
+    };
+  };
+
+  xdg.dataFile."fcitx5/themes/Material-Color" = {
+    recursive = true;
+    source = "${pkgs.fcitx5-material-color}/share/fcitx5/themes/Material-Color-orange";
+  };
+
   systemd.user.services.fcitx5-daemon = {
     Service.Restart="on-failure";
     Service.ExecStart = lib.mkForce "${fcitx5Package}/bin/fcitx5";