Initial commit

flake.nix

@@ -0,0 +1,43 @@
+{
+  description = "NixOS configuration";
+
+  inputs = {
+    # NixOS official package source
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.05";
+    home-manager = {
+      url = "github:nix-community/home-manager/release-25.05";
+      # The `follows` keyword in inputs is used for inheritance.
+      # Here, `inputs.nixpkgs` of home-manager is kept consistent with
+      # the `inputs.nixpkgs` of the current flake,
+      # to avoid problems caused by different versions of nixpkgs.
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+  };
+
+  outputs = { self, nixpkgs, home-manager, ... }@inputs: {
+    nixosConfigurations.case = nixpkgs.lib.nixosSystem {
+      system = "x86_64-linux";
+
+      specialArgs = { inherit inputs; };
+      modules = [
+        # Import the previous configuration.nix we used,
+        # so the old configuration file still takes effect
+        ./configuration.nix
+
+	# make home-manager as a module of nixos so that home-manager
+	# configuration will be deployed automatically when executing
+	# `nixos-rebuild switch`
+        home-manager.nixosModules.home-manager
+        {
+          home-manager.useGlobalPkgs = true;
+          home-manager.useUserPackages = true;
+
+          home-manager.users.alex = import ./home.nix;
+
+	  # Optionally, use home-manager.extraSpecialArgs to pass arguments to
+	  # home.nix
+        }
+      ];
+    };
+  };
+}