diff --git a/default.nix b/default.nix
index 63c86ade..afa2fe55 100644
--- a/default.nix
+++ b/default.nix
@@ -10,6 +10,10 @@
       system = "x86_64-linux";
       modules = [./nix/configurations/tungsten.nix];
     };
+    tungsten-btrfs-test = {
+      system = "x86_64-linux";
+      modules = [./nix/configurations/tungsten-btrfs-test.nix];
+    };
     installer = {
       system = "x86_64-linux";
       modules = [./nix/configurations/installer.nix];
diff --git a/nix/configurations/tungsten-btrfs-test.nix b/nix/configurations/tungsten-btrfs-test.nix
new file mode 100644
index 00000000..a8e54d66
--- /dev/null
+++ b/nix/configurations/tungsten-btrfs-test.nix
@@ -0,0 +1,197 @@
+# Entry point to cherry pick modules
+let
+  sources = import ../sources.nix;
+
+  hostname = "tungsten";
+  username = "leana";
+in
+  {
+    config,
+    lib,
+    ...
+  }: let
+    inherit (lib.modules) mkAliasOptionModule;
+  in {
+    imports = [
+      #
+      # Shorthands
+      #
+      (mkAliasOptionModule ["me"] ["users" "users" username])
+      (mkAliasOptionModule ["hm"] ["home-manager" "users" username])
+
+      #
+      # hostname
+      #
+      {_module.args = {inherit hostname;};}
+
+      #
+      # nixpkgs
+      #
+      {
+        nixpkgs = {
+          overlays = map import [
+            ../overlays/agenix.nix
+            ../overlays/disko.nix
+            ../overlays/nur.nix
+            ../overlays/wired-notify.nix
+            ../overlays/nix-tree.nix
+
+            ../packages/overlay.nix
+          ];
+
+          # Set NIX_PATH and flake registry at the same time
+          # https://github.com/NixOS/nixpkgs/pull/254405
+          flake.source = sources.nixpkgs;
+        };
+
+        system.nixos.version = lib.substring 0 8 sources.nixpkgs.revision;
+      }
+
+      #
+      # NixOS modules
+      #
+      ./tungsten/nixos/hardware-configuration.nix # generated
+      ./tungsten/nixos/fs.nix
+      ./tungsten/nixos/restic.nix
+
+      ./tungsten/nixos/battery.nix
+
+      ./tungsten/nixos/audio.nix
+      ./tungsten/nixos/connectivity.nix
+      ./tungsten/nixos/input.nix
+
+      ./tungsten/nixos/misc.nix
+
+      ./tungsten/nixos/display.nix
+      ./tungsten/nixos/gui.nix
+
+      ./tungsten/nixos/locale.nix
+      ./tungsten/nixos/unfree-predicate.nix
+      ./tungsten/nixos/programs.nix
+
+      ../nixosModules/common/disable-command-not-found.nix
+      ../nixosModules/common/network.nix
+      ../nixosModules/common/sudo-conf.nix
+      ../nixosModules/common/system-nixconf.nix
+
+      ../nixosModules/extra/layouts
+      ../nixosModules/extra/zram.nix
+      ../nixosModules/extra/leana.nix
+
+      ../nixosModules/extra/macbook-swap-fn-ctrl.nix
+      ../nixosModules/extra/macbook-swap-cmd-opt.nix
+
+      #
+      # Extern modules
+      #
+      (sources.disko + "/module.nix")
+      ../disko/tungsten/btrfs.nix
+
+      (sources.agenix + "/modules/age.nix")
+
+      (import sources.url-eater).nixosModules.default
+
+      (sources.nixos-hardware + "/apple/macbook-air/6")
+
+      (import (sources.lix-module + "/module.nix") {inherit (sources) lix;})
+
+      #
+      # home-manager
+      #
+      (sources.home-manager + "/nixos")
+      {
+        home-manager = {
+          useGlobalPkgs = true;
+          useUserPackages = true;
+          sharedModules = [{home.stateVersion = lib.mkDefault config.system.stateVersion;}];
+        };
+
+        hm.imports = [
+          #
+          # hostname
+          #
+          {_module.args = {inherit hostname;};}
+
+          #
+          # home modules
+          #
+          ./tungsten/home/programs.nix
+          ./tungsten/home/misc.nix
+
+          ./tungsten/home/firefox.nix
+          ./tungsten/home/xmobar.nix
+
+          # Language server packages, etc
+          ./tungsten/home/dev.nix
+
+          ../homeModules/common/btop
+          ../homeModules/common/cmus
+          ../homeModules/common/fcitx5
+          ../homeModules/common/fish
+          ../homeModules/common/ranger
+          ../homeModules/common/starship
+          ../homeModules/common/tmux
+          ../homeModules/common/vim
+          ../homeModules/common/wired
+          ../homeModules/common/atuin.nix
+          ../homeModules/common/battery-notify.nix
+          ../homeModules/common/direnv.nix
+          ../homeModules/common/feh.nix
+          ../homeModules/common/firefox.nix
+          ../homeModules/common/fzf.nix
+          ../homeModules/common/git.nix
+          ../homeModules/common/gpg.nix
+          ../homeModules/common/kitty.nix
+          ../homeModules/common/leana.nix
+          ../homeModules/common/locale.nix
+          ../homeModules/common/neovim.nix
+          ../homeModules/common/packages.nix
+          ../homeModules/common/password-store.nix
+          ../homeModules/common/sioyek.nix
+          ../homeModules/common/user-nixconf.nix
+
+          ../homeModules/extra/tmux-fish-integration.nix
+
+          #
+          # Extern modules
+          #
+          (sources.agenix + "/modules/age-home.nix")
+          (import sources.wired-notify).homeManagerModules.default
+        ];
+      }
+
+      #
+      # Secrets
+      #
+      {
+        age.secrets = {
+          wpa_password.file = "${../secrets/wpa_password.age}";
+
+          restic_backblaze_pwd.file = "${../secrets/restic_backblaze_pwd.age}";
+          restic_backblaze_repo.file = "${../secrets/restic_backblaze_repo.age}";
+          restic_backblaze_env.file = "${../secrets/restic_backblaze_env.age}";
+
+          four_pwd.file = "${../secrets/four_pwd.age}";
+          restic_four_pwd.file = "${../secrets/restic_four_pwd.age}";
+
+          sgbk_pwd.file = "${../secrets/sgbk_pwd.age}";
+          restic_sgbk_pwd.file = "${../secrets/restic_sgbk_pwd.age}";
+
+          two_pwd.file = "${../secrets/two_pwd.age}";
+        };
+
+        hm = {
+          age.secrets = {
+            sshconfig = {
+              file = "${../secrets/sshconfig.age}";
+              path = "/home/leana/.ssh/config";
+            };
+            ltex_dict = {
+              file = "${../secrets/ltex_dict.age}";
+              path = "/home/leana/.config/ltex_dict";
+            };
+          };
+        };
+      }
+    ];
+  }