diff --git a/modules/common/default.nix b/modules/common/default.nix
index 24081ac..3393144 100644
--- a/modules/common/default.nix
+++ b/modules/common/default.nix
@@ -113,38 +113,6 @@
   config = let stateVersion = "23.05";
   in {
 
-    nix = {
-
-      # Enable features in Nix commands
-      extraOptions = ''
-        experimental-features = nix-command flakes
-        warn-dirty = false
-      '';
-
-      gc = {
-        automatic = true;
-        options = "--delete-older-than 10d";
-      };
-
-      settings = {
-
-        # Add community Cachix to binary cache
-        # Don't use with macOS because blocked by corporate firewall
-        builders-use-substitutes = true;
-        substituters = lib.mkIf (!pkgs.stdenv.isDarwin)
-          [ "https://nix-community.cachix.org" ];
-        trusted-public-keys = lib.mkIf (!pkgs.stdenv.isDarwin) [
-          "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
-        ];
-
-        # Scans and hard links identical files in the store
-        # Not working with macOS: https://github.com/NixOS/nix/issues/7273
-        auto-optimise-store = lib.mkIf (!pkgs.stdenv.isDarwin) true;
-
-      };
-
-    };
-
     # Basic common system packages for all devices
     environment.systemPackages = with pkgs; [ git vim wget curl ];
 
diff --git a/modules/common/shell/nixpkgs.nix b/modules/common/shell/nixpkgs.nix
index 5345773..5e10602 100644
--- a/modules/common/shell/nixpkgs.nix
+++ b/modules/common/shell/nixpkgs.nix
@@ -72,6 +72,12 @@
           fi
         '');
 
+    # Set automatic generation cleanup for home-manager
+    nix.gc = {
+      automatic = config.nix.gc.automatic;
+      options = config.nix.gc.options;
+    };
+
   };
 
   nix = {
@@ -88,6 +94,34 @@
     # For security, only allow specific users
     settings.allowed-users = [ "@wheel" config.user ];
 
+    # Enable features in Nix commands
+    extraOptions = ''
+      experimental-features = nix-command flakes
+      warn-dirty = false
+    '';
+
+    gc = {
+      automatic = true;
+      options = "--delete-older-than 10d";
+    };
+
+    settings = {
+
+      # Add community Cachix to binary cache
+      # Don't use with macOS because blocked by corporate firewall
+      builders-use-substitutes = true;
+      substituters =
+        lib.mkIf (!pkgs.stdenv.isDarwin) [ "https://nix-community.cachix.org" ];
+      trusted-public-keys = lib.mkIf (!pkgs.stdenv.isDarwin) [
+        "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
+      ];
+
+      # Scans and hard links identical files in the store
+      # Not working with macOS: https://github.com/NixOS/nix/issues/7273
+      auto-optimise-store = lib.mkIf (!pkgs.stdenv.isDarwin) true;
+
+    };
+
   };
 
 }