diff --git a/home/nvim/default.nix b/home/nvim/default.nix
index c576a18..ab64738 100644
--- a/home/nvim/default.nix
+++ b/home/nvim/default.nix
@@ -35,6 +35,10 @@
       #C/C++
       clang-tools
 
+      #Kotlin
+      ktlint
+      kotlin-language-server
+
       #Python
       ruff
       black
@@ -177,6 +181,8 @@
             { import = "lazyvim.plugins.extras.lang.yaml" },
             { import = "lazyvim.plugins.extras.lang.toml" },
             { import = "lazyvim.plugins.extras.lang.docker" },
+            { import = "lazyvim.plugins.extras.lang.kotlin" },
+            { import = "lazyvim.plugins.extras.lang.dart" },
             { import = "plugins" },
             -- treesitter handled by xdg.configFile."nvim/parser", put this line at the end of spec to clear ensure_installed
             { "nvim-treesitter/nvim-treesitter",
@@ -199,11 +205,13 @@
             with plugins; [
               bash
               c
-              lua
-              python
               go
+              lua
               rust
               java
+              dart
+              kotlin
+              python
               javascript
               typescript
               tsx
diff --git a/home/nvim/lua/plugins/format.lua b/home/nvim/lua/plugins/format.lua
index 1cdda20..a07089e 100644
--- a/home/nvim/lua/plugins/format.lua
+++ b/home/nvim/lua/plugins/format.lua
@@ -29,6 +29,8 @@ return {
 			-- C/C++
 			opts.formatters_by_ft.c = { "clang_format" }
 			opts.formatters_by_ft.cpp = { "clang_format" }
+			-- Kotlin
+			opts.formatters_by_ft.kotlin = { "ktlint" }
 			-- Python
 			opts.formatters_by_ft.python = { "black", "ruff_format" }
 			-- JS/TS/Web
@@ -43,6 +45,15 @@ return {
 			opts.formatters_by_ft.yaml = { "yamlfmt" }
 			-- TOML
 			opts.formatters_by_ft.toml = { "taplo" }
+			-- Dart / Flutter
+			opts.formatters_by_ft.dart = {
+				command = "dart",
+				args = function(ctx)
+					return { "format", ctx.bufname }
+				end,
+				stdin = false,
+				exit_codes = { 0 },
+			}
 			opts.default_format_opts = {
 				timeout_ms = 1500,
 				lsp_format = "fallback",
diff --git a/modules/system/environment.nix b/modules/system/environment.nix
index af4c924..539bdca 100644
--- a/modules/system/environment.nix
+++ b/modules/system/environment.nix
@@ -55,6 +55,7 @@ in {
       yt-dlp
 
       #Android
+      edl
       xxd
       file
       binwalk
@@ -82,6 +83,9 @@ in {
       gnumake
       rustc
       cargo
+      dart
+      kotlin
+      flutter
       jdk17
       python312
       pnpm
diff --git a/modules/system/nix.nix b/modules/system/nix.nix
index 7403c6a..fcd59d6 100644
--- a/modules/system/nix.nix
+++ b/modules/system/nix.nix
@@ -44,7 +44,7 @@ with lib; {
     };
   };
   nixpkgs = {
-    config.allowUnfree = false;
+    config.allowUnfree = true;
     hostPlatform = "x86_64-linux";
   };
 }