diff --git a/modules/system/nix/module.nix b/modules/system/nix/module.nix
index 5b8b3e6..8f5a7f1 100644
--- a/modules/system/nix/module.nix
+++ b/modules/system/nix/module.nix
@@ -10,7 +10,7 @@
   ];
 
   nix = {
-    # package = inputs'.nix-super.packages.default;
+    package = inputs'.nix-super.packages.default;
 
     # Run the Nix daemon on lowest possible priority so that my system
     # stays responsive during demanding tasks such as GC and builds.
diff --git a/modules/system/nix/nixpkgs.nix b/modules/system/nix/nixpkgs.nix
index f48d69c..9e110f2 100644
--- a/modules/system/nix/nixpkgs.nix
+++ b/modules/system/nix/nixpkgs.nix
@@ -31,7 +31,7 @@
       # Enable parallel building by default. This, in theory, should speed up building
       # derivations, especially rust ones. However setting this to true causes a mass rebuild
       # of the *entire* system closure, so it must be handled with proper care.
-      enableParallelBuildingByDefault = true;
+      enableParallelBuildingByDefault = false;
 
       # List of derivation warnings to display while rebuilding.
       #  See: <https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/check-meta.nix>