diff --git a/flake.nix b/flake.nix
index 93d2ef2..c99a506 100644
--- a/flake.nix
+++ b/flake.nix
@@ -245,20 +245,13 @@
         # that won't match real hardware, so don't `switch` to it. Adopters
         # copy hosts/example → hosts/<name> and rename this block. See
         # hosts/example/default.nix and docs/getting-started.md.
+        # nix-colors/lazyvim/walker home-manager modules are injected by
+        # mkSystem now, so hosts no longer wire them by hand.
         example = mkSystem "example" {
           inherit system;
           user = settings.user;
           extraSpecialArgs = { inherit settings; };
           extraHmArgs = { inherit settings; };
-          modules = [
-            {
-              home-manager.sharedModules = [
-                inputs.nix-colors.homeManagerModules.default
-                inputs.lazyvim.homeManagerModules.default
-                inputs.walker.homeManagerModules.default
-              ];
-            }
-          ];
         };
 
         # ISO image for live USB/DVD. This is a variant rather than a
diff --git a/lib/mksystem.nix b/lib/mksystem.nix
index 477d4c4..068d5ec 100644
--- a/lib/mksystem.nix
+++ b/lib/mksystem.nix
@@ -155,6 +155,15 @@ nixpkgs.lib.nixosSystem {
         currentSystemUser = user;
       }
       // extraHmArgs;
+      # Omnixient's home.nix depends on these home-manager modules
+      # (colorScheme via nix-colors, programs.lazyvim, programs.walker).
+      # Inject them for every host so consumers don't wire them by hand;
+      # re-importing the same module from a host's `modules` is a no-op.
+      home-manager.sharedModules = [
+        inputs.nix-colors.homeManagerModules.default
+        inputs.lazyvim.homeManagerModules.default
+        inputs.walker.homeManagerModules.default
+      ];
     }
     # Pre-create the home-manager activation script's expected
     # directory tree. See modules/home-manager-bootstrap.nix for