nixos-production/configuration.nix

{ config, pkgs, ... }:
let
  gitRepoUrl = "https://git.skarockoi.de/ska/nixos-production.git";
  gitLocalPath = "/var/lib/nixos-config";
in
{
  # NO hardware configuration import - we handle boot and filesystems directly
  
  # Generic boot settings for any UEFI system
  boot.loader.systemd-boot.enable = true;
  boot.loader.efi.canTouchEfiVariables = true;
  boot.supportedFilesystems = [ "vfat" "ext4" "crypto_LUKS" ];
  
  # Generic kernel modules for most hardware
  boot.initrd.availableKernelModules = [ 
    "xhci_pci" "ehci_pci" "ahci" "usb_storage" "sd_mod" "sr_mod"
    "usbhid" "hid_generic" "nvme"
  ];
  
  # Filesystem setup using device paths that work for most USB installations
  fileSystems."/" = {
    device = "/dev/disk/by-label/nixos";
    fsType = "ext4";
  };
  
  fileSystems."/boot" = {
    device = "/dev/disk/by-label/boot";
    fsType = "vfat";
    options = [ "fmask=0077" "dmask=0077" ];
  };
  
  # LUKS encryption setup (will be set up during installation)
  boot.initrd.luks.devices."root" = {
    device = "/dev/disk/by-label/luks";
    preLVM = true;
  };
  
  # Your existing configuration below (unchanged)
  networking.hostName = "nixos-usb";
  networking.networkmanager.enable = true;
  time.timeZone = "Europe/Berlin";
  i18n.defaultLocale = "de_DE.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";
  };
  
  services.xserver.enable = true;
  services.xserver.displayManager.gdm.enable = true;
  services.xserver.desktopManager.gnome.enable = true;
  services.xserver.xkb.layout = "de";
  services.xserver.libinput.enable = true;
  console.keyMap = "de";
  
  services.pulseaudio.enable = false;
  security.rtkit.enable = true;
  services.pipewire = {
    enable = true;
    alsa.enable = true;
    alsa.support32Bit = true;
    pulse.enable = true;
  };
  
  services.printing.enable = true;
  
  users.users.user = {
    isNormalUser = true;
    description = "user";
    extraGroups = [ "networkmanager" "wheel" ];
    shell = pkgs.bash;
  };
  
  nixpkgs.config.allowUnfree = true;
  
  environment.systemPackages = with pkgs; [
    git
    vim
    curl
    wget
    openssh
    obsidian
    libreoffice
    keepassxc
    thunderbird
    tor-browser
    inkscape
    gimp
    pdfarranger
    epiphany
    gnomeExtensions.gsconnect
    gnomeExtensions.dash-to-dock
  ];
  
  programs.firefox.enable = true;
  
  # Keep your auto-update script unchanged
  environment.etc."update-nixos-config.sh".text = ''
    #!/run/current-system/sw/bin/bash
    set -e
    # Ensure all system tools are available
    export PATH="/run/current-system/sw/bin:/nix/var/nix/profiles/default/bin"
    export NIX_PATH="nixpkgs=/nix/var/nix/profiles/per-user/root/channels/nixos"
    LOCAL_PATH="/var/lib/nixos-config"
    REPO_URL="https://git.skarockoi.de/ska/nixos-production.git"
    if [ ! -d "$LOCAL_PATH/.git" ]; then
      mkdir -p "$LOCAL_PATH"
      chmod 700 "$LOCAL_PATH"
      echo "Cloning config from $REPO_URL..."
      git clone "$REPO_URL" "$LOCAL_PATH"
    else
      cd "$LOCAL_PATH"
      echo "Fetching updates..."
      git fetch origin
      LOCAL_HEAD=$(git rev-parse HEAD)
      REMOTE_HEAD=$(git rev-parse origin/main)
      if [ "$LOCAL_HEAD" != "$REMOTE_HEAD" ]; then
        echo "New config available. Updating..."
        git reset --hard origin/main
        nixos-rebuild switch -I nixos-config="$LOCAL_PATH/configuration.nix"
        echo "System updated successfully."
      else
        echo "Config is already up to date."
      fi
    fi
  '';
  
  environment.etc."update-nixos-config.sh".mode = "0700";
  
  systemd.services.nixos-git-update = {
    description = "Update NixOS from public Git config";
    script = "/etc/update-nixos-config.sh";
    serviceConfig = {
      Type = "oneshot";
      User = "root";
      Group = "root";
    };
  };
  
  systemd.timers.nixos-git-update = {
    description = "Check for config updates hourly";
    wantedBy = [ "timers.target" ];
    timerConfig = {
      OnBootSec = "60s";
      OnUnitActiveSec = "1h";
    };
  };
  
  system.stateVersion = "25.11";
}