diff --git a/darwin/configuration.nix b/darwin/configuration.nix
index 0df2ff6..cb8f86e 100644
--- a/darwin/configuration.nix
+++ b/darwin/configuration.nix
@@ -16,9 +16,10 @@
   nix.package = pkgs.nix;
 
   # Create /etc/bashrc that loads the nix-darwin environment.
-  programs.zsh.enable = true;  # default shell on catalina
+  programs.zsh.enable = true; # default shell on catalina
   # programs.fish.enable = true;
 
+  users.nix.configureBuildUsers = true;
   users.users.walkah = {
     home = "/Users/walkah";
     shell = pkgs.zsh;