优化 nix flake

.gitignore

@@ -2,6 +2,7 @@ config.h
 autostart.sh
 statusbar/
 
+result
 dwm
 *.o
 .ccls-cache/

README.md

@@ -63,8 +63,36 @@ exec dwm
 
 ### Nix Flake
 
-```sh
-nix run github:yaocccc/dwm
+下面是在 nixos configuration 中使用它的示例
+
+```nix
+{
+  description = "My configuration";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    dwm.url = "github:yaocccc/dwm";
+  };
+
+  outputs = { nixpkgs, dwm, ... }:
+    {
+      nixosConfigurations = {
+        hostname = nixpkgs.lib.nixosSystem
+          {
+            system = "x86_64-linux";
+            modules = [
+              {
+                nixpkgs.overlays = [ dwm.overlays.default ];
+                services.xserver = {
+                  enable = true;
+                  windowManager.dwm.enable = true;
+                };
+              }
+            ];
+          };
+      };
+    };
+}
 ```
 下面是在 nixos configuration 中使用它的示例
 ```nix

flake.nix

@@ -35,14 +35,7 @@
           };
         in
         rec {
-          # apps = {
-          #   dwm = {
-          #     type = "app";
-          #     program = "${packages.default}/bin/st";
-          #   };
-          # };
           packages.dwm = pkgs.dwm;
-          # apps.default = apps.dwm;
           packages.default = pkgs.dwm;
           devShells.default = pkgs.mkShell {
             buildInputs = with pkgs; [ xorg.libX11 xorg.libXft xorg.libXinerama gcc ];