diff --git a/home/dot_config/nvim/lsp/svelte-language-server.lua b/home/dot_config/nvim/lsp/svelte-language-server.lua
index 3a7355f..6759670 100644
--- a/home/dot_config/nvim/lsp/svelte-language-server.lua
+++ b/home/dot_config/nvim/lsp/svelte-language-server.lua
@@ -1,6 +1,6 @@
 ---@type vim.lsp.Config
 return {
-  cmd = { "svelteserver" },
+  cmd = { "svelteserver", "--stdio" },
   root_markers = { "package.json", "svelte.config.js" },
   filetypes = { "svelte" },
   settings = {},
diff --git a/nixcfgs/modules/nixos/core/configuration.nix b/nixcfgs/modules/nixos/core/configuration.nix
index d2c7bee..2ef319d 100644
--- a/nixcfgs/modules/nixos/core/configuration.nix
+++ b/nixcfgs/modules/nixos/core/configuration.nix
@@ -20,10 +20,14 @@
   };
 
   # system.copySystemConfiguration = true;
-  nix.settings.experimental-features = [
-    "nix-command"
-    "flakes"
-  ];
+  nix.settings = {
+    trusted-users = ["js0ny" "root"];
+    use-xdg-base-directories = true;
+    experimental-features = [
+      "nix-command"
+      "flakes"
+    ];
+  };
 
   # Define a user account. Don't forget to set a password with ‘passwd’.
   users.users.js0ny = {
@@ -47,8 +51,4 @@
       extraArgs = "--keep 5 --keep-since 3d";
     };
   };
-
-  nix.extraOptions = ''
-    use-xdg-base-directories = true
-  '';
 }
diff --git a/nixcfgs/users/js0ny/default.nix b/nixcfgs/users/js0ny/default.nix
index f26df15..f1bfc4e 100644
--- a/nixcfgs/users/js0ny/default.nix
+++ b/nixcfgs/users/js0ny/default.nix
@@ -20,13 +20,14 @@ in {
   programs.home-manager.enable = true;
 
   xdg.configFile = {
-    "nixpkgs/config.nix" = {
-      text = ''{allowUnfree = true;} '';
-      enable = true;
-    };
-    "nix/nix.conf" = {
-      text = ''use-xdg-base-directories = true '';
-      enable = true;
-    };
+    "nixpkgs/config.nix".text = ''{ allowUnfree = true; }'';
+  };
+  nix.package = pkgs.nix;
+  nix.settings = {
+    use-xdg-base-directories = true;
+    experimental-features = [
+      "nix-command"
+      "flakes"
+    ];
   };
 }
diff --git a/nixcfgs/users/js0ny/packages/gui.nix b/nixcfgs/users/js0ny/packages/gui.nix
index 71d6e5a..3bb0f7a 100644
--- a/nixcfgs/users/js0ny/packages/gui.nix
+++ b/nixcfgs/users/js0ny/packages/gui.nix
@@ -126,6 +126,7 @@ in {
       steamtinkerlaunch
       scanmem
       dex
+      piliplus
     ]
     ++ (mkFcitxIM [
       pkgs.neovim-qt
diff --git a/nixcfgs/users/js0ny/programs/desktop/gnome/copyous.nix b/nixcfgs/users/js0ny/programs/desktop/gnome/copyous.nix
new file mode 100644
index 0000000..a977fb4
--- /dev/null
+++ b/nixcfgs/users/js0ny/programs/desktop/gnome/copyous.nix
@@ -0,0 +1,18 @@
+# 大败而归，等打包了
+{
+  pkgs,
+  lib,
+  ...
+}: let
+  highlightJs = pkgs.fetchurl {
+    url = "https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.11.1/es/highlight.min.js";
+    sha256 = "sha256-eGWDmUnwdk2eCiHjEaTixCYz7q7oyl7BJ7hkOFZXMf4=";
+  };
+in {
+  # Currently, copyous is not in nixpkgs.
+  home.packages = with pkgs; [
+    libgda6
+    gsound
+  ];
+  xdg.dataFile."copyous@boerdereinar.dev/highlight.min.js".source = highlightJs;
+}
diff --git a/nixcfgs/users/js0ny/programs/desktop/gnome/default.nix b/nixcfgs/users/js0ny/programs/desktop/gnome/default.nix
index 2992dca..815c6b0 100644
--- a/nixcfgs/users/js0ny/programs/desktop/gnome/default.nix
+++ b/nixcfgs/users/js0ny/programs/desktop/gnome/default.nix
@@ -19,6 +19,7 @@
 in {
   imports = [
     ../../walker.nix
+    # ./copyous.nix
   ];
   home.packages = with pkgs;
     [
diff --git a/nixcfgs/users/js0ny/programs/duti.nix b/nixcfgs/users/js0ny/programs/duti.nix
index 19cfe6f..11e38b1 100644
--- a/nixcfgs/users/js0ny/programs/duti.nix
+++ b/nixcfgs/users/js0ny/programs/duti.nix
@@ -7,12 +7,14 @@
   iina = "com.colliderli.iina";
   # firefox = "org.nixos.firefox";
   keka = "com.aone.keka";
+  sioyek = "info.sioyek.sioyek";
 
   defaultApps = {
     "${gvim}" = ["md" "json" "js" "txt" "xml"];
     "${iina}" = ["mp4" "mkv"];
     # "${firefox}" = ["html"];
     "${keka}" = ["7z" "zip" "rar" "tar"];
+    "${sioyek}" = ["pdf"];
   };
 
   duti = "${pkgs.duti}/bin/duti";
diff --git a/nixcfgs/users/js0ny/programs/mime.nix b/nixcfgs/users/js0ny/programs/mime.nix
index 5cfa1bd..3b73500 100644
--- a/nixcfgs/users/js0ny/programs/mime.nix
+++ b/nixcfgs/users/js0ny/programs/mime.nix
@@ -71,7 +71,7 @@ in {
     enable = true;
     # In Dolphin, middle click to open with 2nd order default app
     defaultApplications =
-      mkAssoc "org.kde.okular.desktop" ["application/pdf"]
+      mkAssoc "sioyek.desktop;org.kde.okular;" ["application/pdf"]
       // mkAssoc gvim simpleText
       // {
         "inode/directory" = "org.kde.dolphin.desktop";