diff --git a/nix/darwin-configuration.nix b/nix/darwin-configuration.nix
index a09ae7d..21dc483 100644
--- a/nix/darwin-configuration.nix
+++ b/nix/darwin-configuration.nix
@@ -52,7 +52,6 @@
     deno
     dotnet-sdk
     go
-    jdk
     nodejs-19_x
     ruby_3_1
     shards
@@ -84,7 +83,6 @@
     taps = [
       "drud/ddev"
       "homebrew/cask"
-      "homebrew/cask-versions"
     ];
 
     # Please do not the brew.
@@ -99,12 +97,10 @@
     casks = [
       "alt-tab"
       "amethyst"
-      "android-studio"
       "audacity"
       "background-music"
       "db-browser-for-sqlite"
       "discord"
-      "discord-ptb"
       "docker"
       "fig"
       "firefox"
@@ -130,8 +126,10 @@
     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";