diff --git a/configuration.nix b/configuration.nix
index 6fd44a1..f5f2ebd 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -5,7 +5,7 @@ in
 {
   imports = [ ./modules ];
 
-  boot.tmpOnTmpfs = true;
+  boot.tmpOnTmpfs = false;
 
   home-manager.useGlobalPkgs = true;
   home-manager.useUserPackages = true;
diff --git a/dotfiles/neovim/lua/my/plugins/lspconfig.lua b/dotfiles/neovim/lua/my/plugins/lspconfig.lua
index 2cfce09..72b4f06 100644
--- a/dotfiles/neovim/lua/my/plugins/lspconfig.lua
+++ b/dotfiles/neovim/lua/my/plugins/lspconfig.lua
@@ -102,7 +102,8 @@ local servers = {
     }
   },
   rnix = {},
-  cssls = {}
+  cssls = {},
+  kotlin_language_server = {}
   -- agda = {}, Haven't gotten this one to work yet
 }
 
diff --git a/flake.lock b/flake.lock
index 7e444ab..4d17a28 100644
--- a/flake.lock
+++ b/flake.lock
@@ -529,11 +529,11 @@
       },
       "locked": {
         "dir": "contrib",
-        "lastModified": 1660114525,
-        "narHash": "sha256-u0cIHXZREfc5h0r1qDYHXswPAoXfYNRE01twXkYyUgw=",
+        "lastModified": 1660711471,
+        "narHash": "sha256-KcSufGje9D2EWAFq5EkPQoDqzQsfNsSg/m5gIkS7IKU=",
         "owner": "neovim",
         "repo": "neovim",
-        "rev": "3ee6c05b4b5fa253bdf64fff68c71763b5d816b7",
+        "rev": "bccb5de89da452d9136b3c813be584f15d3018ba",
         "type": "github"
       },
       "original": {
@@ -552,11 +552,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1660119382,
-        "narHash": "sha256-DMeHVU8bH03js932AU14mfEEIMJvr/DnrgyG0xtLhZc=",
+        "lastModified": 1660724221,
+        "narHash": "sha256-XywsLM2OxjCGARNlyvAvgO3ZjD+iF6AsLnJ4mJQZ6LM=",
         "owner": "nix-community",
         "repo": "neovim-nightly-overlay",
-        "rev": "39a5400f30c95c04805df8f6f8fc5527decd49af",
+        "rev": "6a8790f60859a7ba074af3d0bc373813f2eac15b",
         "type": "github"
       },
       "original": {
@@ -567,11 +567,11 @@
     },
     "nixos-unstable": {
       "locked": {
-        "lastModified": 1660071133,
-        "narHash": "sha256-XX6T9wcvEZIVWY4TO5O1d2MgFyFrF2v4TpCFs7fjdn8=",
+        "lastModified": 1660646295,
+        "narHash": "sha256-V4G+egGRc3elXPTr7QLJ7r7yrYed0areIKDiIAlMLC8=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "36cc29d837e7232e3176e4651e8e117a6f231793",
+        "rev": "762b003329510ea855b4097a37511eb19c7077f0",
         "type": "github"
       },
       "original": {
@@ -583,11 +583,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1660187857,
-        "narHash": "sha256-+Qmz6wx9qVGpbodRUOFs+ROTXlG/LbasiH+IikF1OQ8=",
+        "lastModified": 1660749083,
+        "narHash": "sha256-GHLFMGH+r3OmI4tV0x/RtxN7DkHcH2ZOhK8uzQeSLiY=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "b946a106c1c62988c69832faae10e491a7817e0b",
+        "rev": "a55a7db823959cf509d55325201f1864af4574b9",
         "type": "github"
       },
       "original": {
@@ -599,11 +599,11 @@
     },
     "nixpkgs-unstable": {
       "locked": {
-        "lastModified": 1660137652,
-        "narHash": "sha256-L92gcG6Ya4bqjJmStl/HTENhc0PR9lmVgTmeVpk13Os=",
+        "lastModified": 1660639432,
+        "narHash": "sha256-2WDiboOCfB0LhvnDVMXOAr8ZLDfm3WdO54CkoDPwN1A=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "a7f89ddd6313ef88fc9c6534ac2511ba9da85fdb",
+        "rev": "6c6409e965a6c883677be7b9d87a95fab6c3472e",
         "type": "github"
       },
       "original": {
diff --git a/modules/applications/neovim.nix b/modules/applications/neovim.nix
index 3382606..ed3415b 100644
--- a/modules/applications/neovim.nix
+++ b/modules/applications/neovim.nix
@@ -17,6 +17,7 @@ let
     sumneko-lua-language-server # lua
     rnix-lsp # nix
     haskell-language-server # haskell
+    kotlin-language-server # kotlin
     # vscode-langservers-extracted # css and shit
 
     # Formatters
diff --git a/modules/applications/xmonad/Main.hs b/modules/applications/xmonad/Main.hs
index b3f207f..755c4f6 100644
--- a/modules/applications/xmonad/Main.hs
+++ b/modules/applications/xmonad/Main.hs
@@ -6,7 +6,7 @@ import System.Environment
 import System.Process
 import XMonad
 import XMonad.Actions.SpawnOn
-import XMonad.Config (defaultConfig)
+import XMonad.Config
 import XMonad.Config.Kde
 import XMonad.Hooks.EwmhDesktops (ewmh, fullscreenEventHook)
 import XMonad.Hooks.ManageDocks
@@ -25,7 +25,7 @@ main =
   xmonad $
     ewmh $
       docks $
-        defaultConfig
+        def
           { modMask = mod4Mask,
             layoutHook = myLayoutHook,
             startupHook = startup,
diff --git a/modules/dev/default.nix b/modules/dev/default.nix
index b203c5c..4e849f8 100644
--- a/modules/dev/default.nix
+++ b/modules/dev/default.nix
@@ -8,6 +8,7 @@
     ./dhall.nix
     ./haskell
     ./fsharp.nix
+    ./kotlin.nix
     # ./racket.nix
     # ./elm.nix
 
diff --git a/modules/dev/kotlin.nix b/modules/dev/kotlin.nix
new file mode 100644
index 0000000..f001a3b
--- /dev/null
+++ b/modules/dev/kotlin.nix
@@ -0,0 +1,8 @@
+{ pkgs, ... }: {
+  home-manager.users.adrielus = {
+    home.packages = with pkgs; [
+      kotlin
+      gradle
+    ];
+  };
+}
diff --git a/modules/nix.nix b/modules/nix.nix
index e18b0e5..a51e3a3 100644
--- a/modules/nix.nix
+++ b/modules/nix.nix
@@ -8,6 +8,7 @@
     extraOptions = ''
       keep-outputs = true
       keep-derivations = true
+      experimental-features = nix-command flakes
     '';
 
     settings = {
diff --git a/modules/themes/themes.nix b/modules/themes/themes.nix
index fc152a6..8983d47 100644
--- a/modules/themes/themes.nix
+++ b/modules/themes/themes.nix
@@ -7,7 +7,8 @@ lib.lists.map (theme: pkgs.callPackage theme { }) [
   (catppuccin {
     # wallpaper = "os/nix-magenta-pink-1920x1080.png";
     # wallpaper = "minimalistic/tetris.png";
-    wallpaper = "os/nix-black-4k.png";
+    # wallpaper = "os/nix-black-4k.png";
+    wallpaper = "misc/comfy-home.png";
     # wallpaper = "landscapes/forrest.png";
     # wallpaper = "landscapes/salty_mountains.png";
     # wallpaper = "misc/rainbow.png";