diff --git a/nix/homeModules/common/user-nixconf.nix b/nix/homeModules/common/user-nixconf.nix
index c7b11124..73ef4e38 100644
--- a/nix/homeModules/common/user-nixconf.nix
+++ b/nix/homeModules/common/user-nixconf.nix
@@ -8,7 +8,6 @@
     package = lib.mkDefault (nixosConfig.nix.package or pkgs.nix);
 
     settings = {
-      allow-import-from-derivation = "true";
       extra-substituters = [
         "https://nix-community.cachix.org"
         "https://leana8959.cachix.org"
@@ -25,8 +24,8 @@
         "nix-command"
         "flakes"
       ];
-      keep-outputs = true;
-      keep-derivations = true;
+      allow-import-from-derivation = true;
+      keep-outputs = false; # Build time derivations and sources
     };
 
     registry.flakies = {