diff --git a/nix/darwin-configuration.nix b/nix/darwin-configuration.nix
index 21dc483..a09ae7d 100644
--- a/nix/darwin-configuration.nix
+++ b/nix/darwin-configuration.nix
@@ -52,6 +52,7 @@
     deno
     dotnet-sdk
     go
+    jdk
     nodejs-19_x
     ruby_3_1
     shards
@@ -83,6 +84,7 @@
     taps = [
       "drud/ddev"
       "homebrew/cask"
+      "homebrew/cask-versions"
     ];
 
     # Please do not the brew.
@@ -97,10 +99,12 @@
     casks = [
       "alt-tab"
       "amethyst"
+      "android-studio"
       "audacity"
       "background-music"
       "db-browser-for-sqlite"
       "discord"
+      "discord-ptb"
       "docker"
       "fig"
       "firefox"
@@ -126,10 +130,8 @@
     package = pkgs.nix;
     settings = {
       experimental-features = [ "nix-command" "flakes" ];
+      build-users-group = "nixbld";
     };
-    extraOptions = ''
-      experimental-features = nix-command flakes
-    '';
     gc = {
       automatic = true;
       options = "--delete-older-than 8d";