diff --git a/flake.lock b/flake.lock
index 4a84608..2f57ed6 100644
--- a/flake.lock
+++ b/flake.lock
@@ -48,6 +48,22 @@
         "type": "github"
       }
     },
+    "flake-compat_4": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1696426674,
+        "narHash": "sha256-kvjfFW7WAETZlt09AgDn1MrtKzP7t90Vf7vypd3OL1U=",
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "0f9255e01c2351cc7d116c072cb317785dd33b33",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
     "flake-parts": {
       "inputs": {
         "nixpkgs-lib": [
@@ -130,9 +146,27 @@
         "type": "github"
       }
     },
+    "flake-utils_2": {
+      "inputs": {
+        "systems": "systems_2"
+      },
+      "locked": {
+        "lastModified": 1710146030,
+        "narHash": "sha256-SZ5L6eA7HJ/nmkzGG7/ISclqe6oZdOZTNoesiInkXPQ=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "b1d9ab70662946ef0850d488da1c9019f3a9752a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
     "git-hooks": {
       "inputs": {
-        "flake-compat": "flake-compat_3",
+        "flake-compat": "flake-compat_4",
         "gitignore": "gitignore",
         "nixpkgs": [
           "small-nvim",
@@ -242,7 +276,7 @@
     },
     "neovim-nightly-overlay": {
       "inputs": {
-        "flake-compat": "flake-compat_2",
+        "flake-compat": "flake-compat_3",
         "flake-parts": "flake-parts_2",
         "git-hooks": "git-hooks",
         "hercules-ci-effects": "hercules-ci-effects",
@@ -324,19 +358,56 @@
         "type": "github"
       }
     },
+    "nixos-wsl": {
+      "inputs": {
+        "flake-compat": "flake-compat_2",
+        "flake-utils": "flake-utils_2",
+        "nixpkgs": "nixpkgs"
+      },
+      "locked": {
+        "lastModified": 1724065442,
+        "narHash": "sha256-8ZUoyeO7Q70bLuijVYvToBSkApw9kfc5hMykTGxB64I=",
+        "owner": "nix-community",
+        "repo": "NixOS-WSL",
+        "rev": "0bec2bfb8a2d4dd16e5b012982ca95e57d50e6a2",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "ref": "main",
+        "repo": "NixOS-WSL",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1723586348,
-        "narHash": "sha256-mDVd0lc+V5Yw23xDxMvPnvfa1FiyiBCRpwtT4uujp0Q=",
+        "lastModified": 1723688146,
+        "narHash": "sha256-sqLwJcHYeWLOeP/XoLwAtYjr01TISlkOfz+NG82pbdg=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "c3d4ac725177c030b1e289015989da2ad9d56af0",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-24.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1724224976,
+        "narHash": "sha256-Z/ELQhrSd7bMzTO8r7NZgi9g5emh+aRKoCdaAv5fiO0=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "f97145f837de6d635b7d6da9a9d5d42e323f8050",
+        "rev": "c374d94f1536013ca8e92341b540eba4c22f9c62",
         "type": "github"
       },
       "original": {
         "owner": "nixos",
+        "ref": "nixos-unstable",
         "repo": "nixpkgs",
-        "rev": "f97145f837de6d635b7d6da9a9d5d42e323f8050",
         "type": "github"
       }
     },
@@ -362,7 +433,8 @@
         "home-manager": "home-manager",
         "nix-index-database": "nix-index-database",
         "nix-vscode-extensions": "nix-vscode-extensions",
-        "nixpkgs": "nixpkgs",
+        "nixos-wsl": "nixos-wsl",
+        "nixpkgs": "nixpkgs_2",
         "nur": "nur",
         "small-nvim": "small-nvim",
         "sops-nix": "sops-nix"
@@ -443,9 +515,24 @@
         "type": "github"
       }
     },
+    "systems_3": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
     "utils": {
       "inputs": {
-        "systems": "systems_2"
+        "systems": "systems_3"
       },
       "locked": {
         "lastModified": 1710146030,
diff --git a/flake.nix b/flake.nix
index 401d0d0..9231c23 100644
--- a/flake.nix
+++ b/flake.nix
@@ -34,7 +34,7 @@
     };
 
   inputs = {
-    nixpkgs.url = "github:nixos/nixpkgs/f97145f837de6d635b7d6da9a9d5d42e323f8050"; # TODO: switch back to nixos-unstable ASAP
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
     flake-parts.url = "github:hercules-ci/flake-parts";
 
     hardware.url = "github:nixos/nixos-hardware";
@@ -44,6 +44,7 @@
     sops-nix.url = "github:Mic92/sops-nix";
     nix-index-database.url = "github:Mic92/nix-index-database";
     nix-vscode-extensions.url = "github:nix-community/nix-vscode-extensions";
+    nixos-wsl.url = "github:nix-community/NixOS-WSL/main";
 
     ## deduplication
     flake-parts.inputs.nixpkgs-lib.follows = "nixpkgs";
diff --git a/hosts/default.nix b/hosts/default.nix
index ec01d97..f793b0f 100644
--- a/hosts/default.nix
+++ b/hosts/default.nix
@@ -34,6 +34,23 @@ in {
 
       inherit specialArgs;
     };
+    kidney = {
+      deployment = {
+        allowLocalDeployment = true;
+      };
+      imports = lib.flatten [
+        ./kidney
+        (modulePaths [
+          "core/tools.nix"
+          "network/tailscale.nix"
+
+          "programs/tools.nix"
+
+          "nix"
+          "nix/gc.nix"
+        ])
+      ];
+    };
     nixdesk = {
       deployment = {
         allowLocalDeployment = true;
diff --git a/hosts/kidney/default.nix b/hosts/kidney/default.nix
new file mode 100644
index 0000000..fa8fa87
--- /dev/null
+++ b/hosts/kidney/default.nix
@@ -0,0 +1,9 @@
+{lib}: {
+  imports = [
+    ./wsl.nix
+  ];
+
+  networking.hostName = "kidney";
+
+  system.stateVersion = "24.05";
+}
diff --git a/hosts/kidney/wsl.nix b/hosts/kidney/wsl.nix
new file mode 100644
index 0000000..7bcfd3b
--- /dev/null
+++ b/hosts/kidney/wsl.nix
@@ -0,0 +1,8 @@
+{inputs, ...}: {
+  imports = [
+    inputs.nixos-wsl.nixosModules.default
+  ];
+
+  wsl.enable = true;
+  wsl.defaultUser = "xun";
+}
diff --git a/system/hardware/specialisations.nix b/system/hardware/specialisations.nix
deleted file mode 100644
index e27c7a6..0000000
--- a/system/hardware/specialisations.nix
+++ /dev/null
@@ -1,12 +0,0 @@
-{
-  specialisation = {
-    light = {
-      inheritParentConfig = true;
-      configuration.programs.matugen.variant = "light";
-    };
-    dark = {
-      inheritParentConfig = true;
-      configuration.programs.matugen.variant = "dark";
-    };
-  };
-}