@@ -7,10 +7,6 @@ ./settings/programs/base.nix     ./settings/programs/shell.nix
   ];
 
-  nixpkgs.config = {
-    allowUnfree = true;
-  };
-
   networking = {
     hostName = "mba";
   };
@@ -24,14 +20,6 @@   # programs.nix-index.enable = true;
 
   environment.variables.LANG = "en_GB.UTF-8";
-
-  nix.gc = {
-    automatic = true;
-    user = "alan";
-    options = "--max-freed $((25 * 1024**3 - 1024 * $(df -P -k /nix/store | tail -n 1 | awk '{ print $4 }')))";
-  };
-  nix.daemonNiceLevel = 10;
-  nix.daemonIONice = true;
 
   # Used for backwards compatibility, please read the changelog before changing.
   # $ darwin-rebuild changelog

@@ -1,9 +1,23 @@-{ config, pkgs, ... }:
+{ config, pkgs, lib, ... }:
 
 {
   services.nix-daemon = {
     enable = true;
     enableSocketListener = true;
+  };
+  nix = {
+    buildCores = lib.mkDefault 0;
+    daemonIONice = true;
+    daemonNiceLevel = 10;
+    gc = {
+      automatic = true;
+      user = "alan";
+      options = "--max-freed $((25 * 1024**3 - 1024 * $(df -P -k /nix/store | tail -n 1 | awk '{ print $4 }')))";
+    };
+  };
+
+  nixpkgs.config = {
+    allowUnfree = true;
   };
 
   programs.zsh = {