?

hosts/common/default.nix

@@ -0,0 +1,15 @@
+{
+  inputs,
+  outputs,
+  ...
+}: {
+  imports = [
+    inputs.home-manager.nixosModules.home-manager
+  ];
+
+  home-manager.useGlobalPkgs = true;
+  home-manager.extraSpecialArgs = {
+    inherit inputs outputs;
+  };
+
+}

hosts/hummingbird/configuration.nix

@@ -9,9 +9,9 @@
   ...
 }: {
   imports = [
+    ../common
     # Include the results of the hardware scan.
     ./hardware-configuration.nix
-    #inputs.home-manager.nixosModules.default
   ];
 
   # Bootloader.
@@ -19,7 +19,6 @@
   boot.loader.efi.canTouchEfiVariables = true;
 
   # mask dev-tpmrm0.device
-  #systemd.services.dev-tpmrm0.wantedBy = lib.mkForce [];
   systemd.units."dev-tpmrm0.device".enable = false;
 
   networking.hostName = "hummingbird"; # Define your hostname.