it works :D

flake.lock

@@ -33,7 +33,28 @@
         "type": "github"
       }
     },
-    "helium": {
+    "flake-parts_2": {
+      "inputs": {
+        "nixpkgs-lib": [
+          "nixvim",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1785627969,
+        "narHash": "sha256-4dtXQk/NMePegK/nWp5NSeuZKLATItOq61lpEvmXqGw=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "427bf4bd9435fdf21321c8cc628c24efc14c0f7a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "type": "github"
+      }
+    },
+    "helium-browser": {
       "inputs": {
         "nixpkgs": [
           "nixpkgs"
@@ -42,11 +63,11 @@
         "utils": "utils"
       },
       "locked": {
-        "lastModified": 1785641213,
+        "lastModified": 1788065178,
-        "narHash": "sha256-V9HKF0TynM6AI1sTuClNFIyr0wIwC82zNQymJs7Ldlk=",
+        "narHash": "sha256-ADzuZ/MqrdJOMucTux5j0QMxo0YnCHLxuZAYlK/wxPE=",
         "owner": "schembriaiden",
         "repo": "helium-browser-nix-flake",
-        "rev": "141470984a71fb22f1266fca6773d2a4d0991468",
+        "rev": "f1250fd4dcd8f22cb3d8aa1e8e00f56cc947e795",
         "type": "github"
       },
       "original": {
@@ -109,11 +130,11 @@
     },
     "nixpkgs-darwin": {
       "locked": {
-        "lastModified": 1785067121,
+        "lastModified": 1787940818,
-        "narHash": "sha256-rdJdWxAcg5fnntU4DjPivPdVEN4F+VJavw+UWpEMeUI=",
+        "narHash": "sha256-vFzVv78WlyEbTyV5BbrnicnV159wC0YPOcBe3QagyBI=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "329c3d2af6d1b618705150ea39f72c15eb4e613e",
+        "rev": "f6107e546a5012172d93e79f1f7950da02ad798f",
         "type": "github"
       },
       "original": {
@@ -154,15 +175,39 @@
         "type": "github"
       }
     },
+    "nixvim": {
+      "inputs": {
+        "flake-parts": "flake-parts_2",
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "systems": "systems_2"
+      },
+      "locked": {
+        "lastModified": 1787536726,
+        "narHash": "sha256-aBh5Yk9tX8ZV4k10BJr2fvTq0/+iWGegaCMUOU7YKas=",
+        "owner": "nix-community",
+        "repo": "nixvim",
+        "rev": "e2c3f9f36326d07340626847543c557e2b95fb50",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "ref": "nixos-26.05",
+        "repo": "nixvim",
+        "type": "github"
+      }
+    },
     "root": {
       "inputs": {
         "flake-file": "flake-file",
         "flake-parts": "flake-parts",
-        "helium": "helium",
+        "helium-browser": "helium-browser",
         "home-manager": "home-manager",
         "import-tree": "import-tree",
         "nixpkgs": "nixpkgs",
-        "nixpkgs-unstable": "nixpkgs-unstable"
+        "nixpkgs-unstable": "nixpkgs-unstable",
+        "nixvim": "nixvim"
       }
     },
     "systems": {
@@ -180,6 +225,21 @@
         "type": "github"
       }
     },
+    "systems_2": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
     "utils": {
       "inputs": {
         "systems": "systems"

flake.nix

@@ -7,7 +7,7 @@
 		# NixOS official package source, using the nixos-26.05 branch here
 		nixpkgs.url = "github:nixos/nixpkgs/nixos-26.05";
 		nixpkgs-unstable.url = "github:nixos/nixpkgs/nixos-unstable";
-		helium = {
+		helium-browser = {
 			url = "github:schembriaiden/helium-browser-nix-flake";
 			inputs.nixpkgs.follows = "nixpkgs";
 		};
@@ -15,6 +15,10 @@
 			url = "github:nix-community/home-manager/release-26.05";
 			inputs.nixpkgs.follows = "nixpkgs";
 		};
+		nixvim = {
+      			url = "github:nix-community/nixvim/nixos-26.05";
+      			inputs.nixpkgs.follows = "nixpkgs";
+    		};
 		flake-parts.url = "github:hercules-ci/flake-parts";
 		flake-file.url = "github:vic/flake-file";
 		import-tree.url = "github:vic/import-tree";

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 = [
@@ -12,12 +13,13 @@
 	};
 
 	flake.modules.homeManager.system-desktop = {
-		imports = with inputs.self.modules.homeManager; [
+		imports = 
+			with inputs.self.modules.homeManager; 
+			[
 				system-base
 
 				kitty
 
-			browser
 				zsh
 			];
 	};

modules/users/snurm/snurm.nix

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