Add nixos config

nix/nixos/configuration.nix.old

@@ -0,0 +1,64 @@
+# NixOS-WSL Configuration
+# This works with the flake.nix in this directory
+#
+# Apply with:
+#   sudo nixos-rebuild switch --flake /home/pan/dev/config/dot/nix/nixos#nix
+
+{ config, lib, pkgs, ... }:
+
+{
+  # WSL-specific settings
+  wsl.enable = true;
+  wsl.defaultUser = "pan";
+  wsl.interop.register = true;
+
+  # Networking
+  networking.hostName = "nix";
+  networking.networkmanager.enable = true;
+
+  # Time zone and locale
+  time.timeZone = "Europe/Berlin";
+  i18n.defaultLocale = "en_US.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";
+  };
+
+  # User account
+  users.users.pan = {
+    isNormalUser = true;
+    description = "Martin Pander";
+    extraGroups = [ "networkmanager" "wheel" ];
+    shell = pkgs.zsh;
+  };
+
+  # Enable Zsh system-wide
+  programs.zsh.enable = true;
+
+  # Nix settings
+  nix.settings = {
+    experimental-features = [ "nix-command" "flakes" ];
+  };
+
+  # Allow unfree packages
+  nixpkgs.config.allowUnfree = true;
+
+  # Minimal system packages (most go in Home Manager)
+  environment.systemPackages = with pkgs; [
+    vim
+    git
+    wget
+    curl
+  ];
+
+  # NixOS version (don't change unless you know what you're doing)
+  system.stateVersion = "25.05";
+}