diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..8ce4779
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,64 @@
+{
+  "nodes": {
+    "home-manager": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1738448366,
+        "narHash": "sha256-4ATtQqBlgsGqkHTemta0ydY6f7JBRXz4Hf574NHQpkg=",
+        "owner": "nix-community",
+        "repo": "home-manager",
+        "rev": "18fa9f323d8adbb0b7b8b98a8488db308210ed93",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "home-manager",
+        "type": "github"
+      }
+    },
+    "nixos-hardware": {
+      "locked": {
+        "lastModified": 1738471961,
+        "narHash": "sha256-cgXDFrplNGs7bCVzXhRofjD8oJYqqXGcmUzXjHmip6Y=",
+        "owner": "NixOS",
+        "repo": "nixos-hardware",
+        "rev": "537286c3c59b40311e5418a180b38034661d2536",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "repo": "nixos-hardware",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1738410390,
+        "narHash": "sha256-xvTo0Aw0+veek7hvEVLzErmJyQkEcRk6PSR4zsRQFEc=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "3a228057f5b619feb3186e986dbe76278d707b6e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "home-manager": "home-manager",
+        "nixos-hardware": "nixos-hardware",
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/home-manager/hyprland.nix b/home-manager/hyprland.nix
index 30028f9..1afee27 100644
--- a/home-manager/hyprland.nix
+++ b/home-manager/hyprland.nix
@@ -181,7 +181,6 @@
         );
     };
     plugins = [
-      # pkgs.hyprlandPlugins.
     ];
   };
   home.sessionVariables = {
diff --git a/hosts/arcadia/home-manager.nix b/hosts/arcadia/home-manager.nix
index 0a0a650..2f414d2 100644
--- a/hosts/arcadia/home-manager.nix
+++ b/hosts/arcadia/home-manager.nix
@@ -9,13 +9,21 @@
     vscode
     vivaldi
     discord
-    discord-canary
     helvum
     obs-studio
     superfile
     plemoljp
     plemoljp-nf
     prismlauncher
+    scrcpy
+    tetrio-desktop
+    kicad
+    blender-hip
+    gimp
+    inkscape
+    obsidian
+    zed-editor
+    easyeffects
   ];
   programs.git = {
     enable = true;
diff --git a/hosts/arcadia/nixos.nix b/hosts/arcadia/nixos.nix
index 82f02b1..29d4280 100644
--- a/hosts/arcadia/nixos.nix
+++ b/hosts/arcadia/nixos.nix
@@ -24,12 +24,13 @@
     deno
     nodejs
     pnpm
-    scrcpy
-    tetrio-desktop
-    # kicad
-    # blender-hip
-    gimp
-    inkscape
+
+    qemu
+    (pkgs.writeShellScriptBin "qemu-system-x86_64-uefi" ''
+      qemu-system-x86_64 \
+        -bios ${pkgs.OVMF.fd}/FV/OVMF.fd \
+        "$@"
+    '')
   ];
 
   boot.loader.systemd-boot.enable = true;
diff --git a/hosts/default.nix b/hosts/default.nix
index e22ab58..37586ae 100644
--- a/hosts/default.nix
+++ b/hosts/default.nix
@@ -38,7 +38,7 @@ let
         extraSpecialArgs = {
           inherit inputs hostname username;
         };
-        modules = homeModule ++ [
+        modules = [
           {
             home = {
               inherit username;
@@ -47,7 +47,8 @@ let
             };
             programs.home-manager.enable = true;
           }
-        ];
+          (import ../system/home-manager)
+        ] ++ homeModule;
       };
     };
 in
diff --git a/programs/utility.nix b/programs/utility.nix
index c8de501..3f2467e 100644
--- a/programs/utility.nix
+++ b/programs/utility.nix
@@ -4,7 +4,7 @@
     zip
     unzip
     ripgrep
-    btop
+    btop-rocm
     bat
 
     wezterm
diff --git a/system/home-manager/default.nix b/system/home-manager/default.nix
new file mode 100644
index 0000000..24e8df8
--- /dev/null
+++ b/system/home-manager/default.nix
@@ -0,0 +1,11 @@
+{
+  imports = [
+    ./theme-switcher.nix
+  ];
+
+    home.activation = {
+        makedir = ''
+            mkdir -p ~/.config/cornflake
+        '';
+      };
+}
diff --git a/system/home-manager/theme-switcher.nix b/system/home-manager/theme-switcher.nix
new file mode 100644
index 0000000..d6027bb
--- /dev/null
+++ b/system/home-manager/theme-switcher.nix
@@ -0,0 +1,29 @@
+{ pkgs, ... }:
+let
+  apply-theme-script = pkgs.writeScript "apply-theme" ''
+    curr=$(cat ~/.config/cornflake/current-theme)
+    if [ "$curr" = "prefer-light" ]; then
+        dconf write /org/gnome/desktop/interface/color-scheme "'prefer-light'"
+    else
+        dconf write /org/gnome/desktop/interface/color-scheme "'prefer-dark'"
+    fi
+  '';
+
+  desktopEntry = {
+    name = "Toggle theme";
+    exec = ''${pkgs.writeScript "theme" ''
+      curr=$(cat ~/.config/cornflake/current-theme)
+      if [ "$curr" = "prefer-light" ]; then
+        echo 'prefer-dark' > ~/.config/cornflake/current-theme
+      else
+        echo 'prefer-light' > ~/.config/cornflake/current-theme
+      fi
+      ${apply-theme-script}
+    ''}'';
+  };
+in
+{
+  xdg.desktopEntries = {
+    theme-switcher = desktopEntry;
+  };
+}