diff --git a/module.nix b/module.nix
index 27ed248..f3aadb9 100644
--- a/module.nix
+++ b/module.nix
@@ -8,9 +8,8 @@
   # set some nix settings defaults
   config.nix.settings = {
     repl-overlays = [ ./repl-overlay.nix ];
-    experimental-features = "nix-command flakes repl-flake";
-    substituters = [ "https://cache.lix.systems" ];
-    trusted-public-keys = [ "cache.lix.systems:aBnZUw8zA7H35Cz2RyKFVs3H4PlGTLawyY5KRbvJR8o=" ];
+    experimental-features = "nix-command flakes repl-flake pipe-operator";
+    temp-dir = "/var/tmp";
 
     # we're disabling the default flake registry because i don't like it
     flake-registry = "";