Set up 'nix-topology'

flake.nix

@@ -3,6 +3,10 @@
     nixpkgs = {
       url = "github:nixos/nixpkgs?ref=nixos-25.05";
     };
+    flake-utils = {
+      url = "github:numtide/flake-utils";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
     disko = {
       url = "github:nix-community/disko/latest";
       inputs.nixpkgs.follows = "nixpkgs";
@@ -11,6 +15,10 @@
       url = "github:nix-community/home-manager/release-25.05";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+    nix-topology = {
+      url = "github:oddlama/nix-topology";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
     nvim = {
       url = "path:./dots/.config/nvim";
       inputs.nixpkgs.follows = "nixpkgs";
@@ -21,8 +29,10 @@
     {
       self,
       nixpkgs,
+      flake-utils,
       disko,
       home-manager,
+      nix-topology,
       nvim,
     }:
     {
@@ -33,9 +43,24 @@
             disko.nixosModules.disko
             home-manager.nixosModules.home-manager
             ./hosts/vm/configuration.nix
+            nix-topology.nixosModules.default
             { environment.systemPackages = [ nvim.packages.x86_64-linux.nvim ]; }
           ];
         };
       };
-    };
+    }
+    // flake-utils.lib.eachDefaultSystem (system: rec {
+      pkgs = import nixpkgs {
+        inherit system;
+        overlays = [ nix-topology.overlays.default ];
+      };
+
+      topology = import nix-topology {
+        inherit pkgs;
+        modules = [
+          # ./topology.nix
+          { nixosConfigurations = self.nixosConfigurations; }
+        ];
+      };
+    });
 }