it works :D

modules/hosts/nixos-desktop/nixos-desktop.nix

@@ -0,0 +1,12 @@
+{ inputs, ... }: {
+	flake.modules.nixos.nixos-desktop = {
+		imports =
+			with inputs.self.modules.nixos;
+			with inputs.self.factory;
+			[
+				system-desktop
+				systemd-boot
+				i18n-de
+			];
+	};
+}

modules/nix/tools/home-manager.nix

@@ -20,6 +20,7 @@
     home-manager = {
       verbose = true;
       useGlobalPkgs = true;
+	  backupFileExtension = "backup";
     };
   };
 }

modules/programs/browser.nix

@@ -0,0 +1,13 @@
+{ inputs, ... }: {
+	flake-file.inputs = {
+		helium-browser = {
+			url = "github:schembriaiden/helium-browser-nix-flake";
+			inputs.nixpkgs.follows = "nixpkgs";
+		};
+	};
+	flake.modules.nixos.browser = { pkgs, ... }: {
+		environment.systemPackages = [
+			inputs.helium-browser.packages.${pkgs.stdenv.hostPlatform.system}.default
+		];
+	};
+}

modules/programs/git.nix

@@ -0,0 +1,5 @@
+{
+	flake.modules.nixos.git = { pkgs, ... }: {
+		environment.systemPackages = [ pkgs.git ];
+	};
+}

modules/programs/nixvim/nixvim.nix

@@ -0,0 +1,18 @@
+{ inputs, ... }: {
+  flake-file.inputs = {
+    nixvim.url = "github:nix-community/nixvim/nixos-26.05";
+    nixvim.inputs.nixpkgs.follows = "nixpkgs";
+  };
+
+  flake.modules.homeManager.nixvim = {
+    imports = [
+      inputs.nixvim.homeModules.nixvim
+    ];
+
+    programs.nixvim = {
+      enable = true;
+    };
+
+    home.sessionVariables.EDITOR = "nvim";
+  };
+}

modules/programs/zsh/zsh.nix

@@ -0,0 +1,29 @@
+{ inputs, ... }:
+{
+	flake.modules.nixos.zsh = {
+		programs.zsh.enable = true;
+
+		environment.pathsToLink = [ "/share/zsh" ];
+	};
+
+	flake.modules.homeManager.zsh = { pkgs, ... }: {
+		imports = with inputs.self.modules.homeManager; [
+		];
+
+		programs.zsh = {
+			enable = true;
+
+			autocd = true;
+			enableCompletion = true;
+			autosuggestion.enable = true;
+			syntaxHighlighting.enable = true;
+
+			oh-my-zsh = {
+				enable = true;
+				plugins = [
+					"git"
+				];
+			};
+		};
+	};
+}

modules/services/pipewire.nix

@@ -0,0 +1,11 @@
+{
+	flake.modules.nixos.pipewire = {
+		services.pipewire = {
+			enable = true;
+			alsa.enable = true;
+			alsa.support32Bit = true;
+			pulse.enable = true;
+			wireplumber.enable = true;
+		};
+	};
+}

modules/system-settings/amd-gpu.nix

@@ -0,0 +1,5 @@
+{
+	flake.modules.nixos.amd-gpu = { pkgs, ... }: {
+		boot.kernelModules = [ "kvm-amd" ];
+	};
+}

modules/system-settings/i18n-de.nix

@@ -0,0 +1,21 @@
+{
+	flake.modules.nixos.i18n-de = {
+		time.timeZone = "Europe/Berlin";
+
+		i18n.defaultLocale = "en_US.UTF-8";
+		i18n.extraLocales = [ "ja_JP.UTF-8/UTF-8" ];
+
+		i18n.extraLocaleSettings = {
+			LC_ADDRESS = "de_DE.UTF-8";
+			LC_IDENTIFICATION = "de_DE.UTF-8";
+			LC_MEASUREMENT = "de_DE.UTF-8";
+			LC_MONETARY = "de_DE.UTF-8";
+			LC_NAME = "de_DE.UTF-8";
+			LC_NUMERIC = "de_DE.UTF-8";
+			LC_PAPER = "de_DE.UTF-8";
+			LC_TELEPHONE = "de_DE.UTF-8";
+			LC_TIME = "de_DE.UTF-8";
+		};
+		console.keyMap = "de";
+	};
+}

modules/system-settings/linux-latest.nix

@@ -0,0 +1,5 @@
+{
+	flake.modules.nixos.linux-latest = { pkgs, ... }: {
+		# boot.kernelPackages.pkgs.linuxPackages_latest;
+	};
+}

modules/system-settings/systemd-boot.nix

@@ -0,0 +1,6 @@
+{
+	flake.modules.nixos.systemd-boot = {
+		boot.loader.systemd-boot.enable = true;
+		boot.loader.efi.canTouchEfiVariables = true;
+	};
+}

modules/system-types/desktop/desktop.nix

@@ -4,6 +4,7 @@
 			system-base
 			hyprland
 			pipewire
+			browser
 		];
 
 		home-manager.sharedModules = [
@@ -12,13 +13,14 @@
 	};
 
 	flake.modules.homeManager.system-desktop = {
-		imports = with inputs.self.modules.homeManager; [
-			system-base
+		imports = 
+			with inputs.self.modules.homeManager; 
+			[
+				system-base
 
-			kitty
+				kitty
 
-			browser
-			zsh
-		];
+				zsh
+			];
 	};
 }

modules/users/snurm/snurm.nix

@@ -27,6 +27,7 @@
 				imports = with self.modules.homeManager; [
 					snurm-git
 					btop
+					nixvim
 				];
 			};
 		}