Ok, resigned that we need home-manager and system-manager seperate. Working niri

home-manager/flake.nix

@@ -0,0 +1,39 @@
+{
+  description = "Home Manager configuration of nbraswell6";
+
+  inputs = {
+    # Specify the source of Home Manager and Nixpkgs.
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    niri = {
+        url = "github:sodiboo/niri-flake";
+        inputs.nixpkgs.follows =  "nixpkgs";
+    };
+    home-manager = {
+      url = "github:nix-community/home-manager";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+  };
+
+  outputs =
+    { nixpkgs, niri, home-manager, ... }:
+    let
+      system = "x86_64-linux";
+      pkgs = nixpkgs.legacyPackages.${system};
+    in
+    {
+      homeConfigurations."nbraswell6" = home-manager.lib.homeManagerConfiguration {
+        inherit pkgs;
+
+        # Specify your home configuration modules here, for example,
+        # the path to your home.nix.
+        modules = [
+          ((import ./home.nix) { username = "nbraswell6"; homeDirectory = "/home/nbraswell6";})
+          #niri.nixosModules.niri
+          niri.homeModules.niri
+        ];
+
+        # Optionally use extraSpecialArgs
+        # to pass through arguments to home.nix
+      };
+    };
+}