added niri

modules/system/desktop-environments/niri.nix

@@ -0,0 +1,49 @@
+{ lib, config, inputs, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.settings.desktop-environments.niri;
+in {
+  options = {
+    settings.desktop-environments.niri.enable = lib.mkOption {
+      type = lib.types.bool;
+      description = ''
+        Enable niri desktop environment
+      '';
+      default = false;
+    };
+  };
+
+  imports = [
+    inputs.niri.nixosModules.niri
+  ];
+
+  config = mkIf cfg.enable {
+    nix = {
+      settings = {
+        substituters = [
+          "https://niri.cachix.org"
+        ];
+        trusted-public-keys = [
+          "niri.cachix.org-1:Wv0OmO7PsuocRKzfDoJ3mulSl7Z6oezYhGhR+3W2964="
+        ];
+      };
+    };
+  
+    programs.niri.enable = true;
+    programs.niri.package = pkgs.unstable.niri;
+    nixpkgs.overlays = [ inputs.niri.overlays.niri ];
+    environment.variables.NIXOS_OZONE_WL = "1";
+
+    environment.systemPackages = with pkgs; [
+      wl-clipboard
+      wayland-utils
+      libsecret
+      cage
+      gamescope
+      xwayland-satellite-unstable
+      swaybg
+    ];
+  };
+}