diff --git a/home/default.nix b/home/default.nix
index 09a7743..0118d22 100644
--- a/home/default.nix
+++ b/home/default.nix
@@ -19,11 +19,21 @@
   # Tell nix what version it is.
   nix.package = pkgs.nix;
 
-  # Enable flakes.
-  nix.settings.experimental-features = [
-    "nix-command"
-    "flakes"
-  ];
+  nix = {
+    # Enable flakes.
+    settings.experimental-features = [
+      "nix-command"
+      "flakes"
+    ];
+
+    # Disable that annoying "git tree is dirty" warning.
+    extraOptions = ''
+      warn-dirty = false
+    '';
+
+    # Garbage collection.
+    gc.automatic = true;
+  };
 
   xdg.configFile."nixpkgs/config.nix".text = # nix
     ''