Added Raspi 4 Conf

hosts/rpi4/configuration.nix

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+{ config, lib, pkgs, ... }:
+
+{
+  imports =
+    [ # Include the results of the hardware scan.
+      ./hardware-configuration.nix
+      ./fan-controll.nix
+    ];
+
+  # Use the extlinux boot loader. (NixOS wants to enable GRUB by default)
+  boot.loader.grub.enable = false;
+  # Enables the generation of /boot/extlinux/extlinux.conf
+  boot.loader.generic-extlinux-compatible.enable = true;
+
+  # 📝 Uncomment the default hostname.
+  networking.hostName = "nix-rpi4-1"; # Define your hostname.
+  # Pick only one of the below networking options.
+  # networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.
+  # 📝 If you are using ethernet to connect to the device, uncomment the NetworkManager option.
+  networking.networkmanager.enable = true;  # Easiest to use and most distros use this by default.
+
+  # Set your time zone.
+  time.timeZone = "Europe/Berlin";
+
+  # Configure network proxy if necessary
+  # networking.proxy.default = "http://user:password@proxy:port/";
+  # networking.proxy.noProxy = "127.0.0.1,localhost,internal.domain";
+
+  # Select internationalisation properties.
+  # i18n.defaultLocale = "en_US.UTF-8";
+  # console = {
+  #   font = "Lat2-Terminus16";
+  #   keyMap = "us";
+  #   useXkbConfig = true; # use xkb.options in tty.
+  # };
+
+  # Enable the X11 windowing system.
+  # services.xserver.enable = true;
+
+  # Configure keymap in X11
+  # services.xserver.xkb.layout = "us";
+  # services.xserver.xkb.options = "eurosign:e,caps:escape";
+
+  # Enable CUPS to print documents.
+  # services.printing.enable = true;
+
+  # Enable sound.
+  # hardware.pulseaudio.enable = true;
+  # OR
+  # services.pipewire = {
+  #   enable = true;
+  #   pulse.enable = true;
+  # };
+
+  # Enable touchpad support (enabled default in most desktopManager).
+  # services.libinput.enable = true;
+
+  # Define a user account. Don't forget to set a password with 'passwd'.
+  # users.users.alice = {
+  #   isNormalUser = true;
+  #   extraGroups = [ "wheel" ]; # Enable 'sudo' for the user.
+  #   packages = with pkgs; [
+  #     firefox
+  #     tree
+  #   ];
+  # };
+
+  # Enable Raspberry Pi 4 GPIO support
+  # hardware.raspberry-pi."4".enable = true;
+
+  # 📝 Make sure the `nixos` user stays.
+  users.users.nixos = {
+    isNormalUser = true;
+    extraGroups = [ "wheel" "gpio" ]; # Enable 'sudo' for the user.
+    shell = pkgs.fish;
+    # 📝 Re-add the trusted SSH keys.
+    openssh.authorizedKeys.keys = [
+    "ssh-rsa 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 phil@web.cyperpunk.de"
+    ];
+    # 📝 Give user an empty password.
+    # ⚠️ This is pretty risky, so use only in initial setup.
+    password = "1P2h3i4lon";
+  };
+ 
+ users.users.phil = {
+    isNormalUser = true;
+    extraGroups = [ "wheel" "gpio" "i2c" ]; # Enable 'sudo' for the user.
+    shell = pkgs.fish;
+    # 📝 Re-add the trusted SSH keys.
+    openssh.authorizedKeys.keys = [
+    "ssh-rsa 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 phil@web.cyperpunk.de"
+    ];
+    # 📝 Give user an empty password.
+    # ⚠️ This is pretty risky, so use only in initial setup.
+    password = "1P2h3i4lon";
+  };
+  # 📝 Remove the need to be prompted for a password when using `sudo`.
+  # ⚠️ This is pretty risky, so use only in initial setup.
+  security.sudo.wheelNeedsPassword = false;
+
+  # List packages installed in system profile. To search, run:
+  # $ nix search wget
+  # 📝 Uncomment system packages to ensure that vim access stays.
+  environment.systemPackages = with pkgs; [
+    vim # Do not forget to add an editor to edit configuration.nix! The Nano editor is also installed by default.
+    wget
+    git
+    fastfetch
+    neovim
+    curl
+    fish
+    kitty
+    libgpiod
+    hping
+    gcc
+    libraspberrypi
+    eza
+    fzf
+    stress-ng
+    i2c-tools
+  ];
+
+  # Enable fish shell
+  programs.fish = {
+    enable = true;
+    shellAliases = {
+      ls = "eza";
+      la = "eza -la";
+      f = "fzf";
+      i = "kitty +kitten icat";
+      tw = "tw --theme config";
+    };
+    interactiveShellInit = ''
+      starship init fish | source
+      fzf --fish | source
+      function fish_greeting
+      		fastfetch
+      end
+    '';
+  };
+
+  # Some programs need SUID wrappers, can be configured further or are
+  # started in user sessions.
+  # programs.mtr.enable = true;
+  # programs.gnupg.agent = {
+  #   enable = true;
+  #   enableSSHSupport = true;
+  # };
+
+  # List services that you want to enable:
+
+  # Enable the OpenSSH daemon.
+  # services.openssh.enable = true;
+
+  # 📝 Add SSH access, but only using SSH keys, and to the NixOS user.
+  services.openssh = {
+    enable = true;
+    authorizedKeysInHomedir = true;  # Do not trust SSH keys in ~/.ssh/authorized_keys.
+    settings = {
+      PasswordAuthentication = true; # Disable password authentication.
+      AllowUsers = [ "nixos" "phil" ];       # Allow only login via the "nixos" user.
+      PermitRootLogin = "no";         # Disable root login via SSH.
+    };
+  };
+
+  # Open ports in the firewall.
+  # networking.firewall.allowedTCPPorts = [ ... ];
+  # networking.firewall.allowedUDPPorts = [ ... ];
+  # Or disable the firewall altogether.
+  # 📝 Uncomment firewall option if you are okay with disabling the firewall entirely during initial setup.
+  networking.firewall.enable = false;
+
+  # Copy the NixOS configuration file and link it from the resulting system
+  # (/run/current-system/configuration.nix). This is useful in case you
+  # accidentally delete configuration.nix.
+  # system.copySystemConfiguration = true;
+
+  # This option defines the first version of NixOS you have installed on this particular machine,
+  # and is used to maintain compatibility with application data (e.g. databases) created on older NixOS versions.
+  #
+  # Most users should NEVER change this value after the initial install, for any reason,
+  # even if you've upgraded your system to a new NixOS release.
+  #
+  # This value does NOT affect the Nixpkgs version your packages and OS are pulled from,
+  # so changing it will NOT upgrade your system - see https://nixos.org/manual/nixos/stable/#sec-upgrading for how
+  # to actually do that.
+  #
+  # This value being lower than the current NixOS release does NOT mean your system is
+  # out of date, out of support, or vulnerable.
+  #
+  # Do NOT change this value unless you have manually inspected all the changes it would make to your configuration,
+  # and migrated your data accordingly.
+  #
+  # For more information, see `man configuration.nix` or https://nixos.org/manual/nixos/stable/options#opt-system.stateVersion .
+  system.stateVersion = "24.11"; # Did you read the comment?
+
+}

hosts/rpi4/fan-controll.nix

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+{ pkgs, ... }:
+{
+  environment.systemPackages = with pkgs; [
+    (python3.withPackages (ps: [ ps.smbus2 ]))
+  ];
+
+
+  # Fan control service
+  systemd.services.argon-fan = {
+    description = "Argon40 Fan Control via I2C";
+    after = [ "multi-user.target" ];
+    wantedBy = [ "multi-user.target" ];
+    
+    serviceConfig = {
+      Type = "simple";
+      Restart = "always";
+      ExecStart = pkgs.writeScript "argon-fan.py" ''
+        #!${pkgs.python3.withPackages (ps: [ ps.smbus2 ])}/bin/python3
+        import smbus2
+        import time
+        import subprocess
+        
+        bus = smbus2.SMBus(1)
+        
+        while True:
+            try:
+                # Get temperature
+                temp_output = subprocess.check_output(['${pkgs.libraspberrypi}/bin/vcgencmd', 'measure_temp']).decode()
+                temp = float(temp_output.replace("temp=","").replace("'C\n",""))
+                
+                # Set fan speed based on temperature (0-100)
+                if temp < 55:
+                    speed = 0
+                elif temp < 60:
+                    speed = 25
+                elif temp < 65:
+                    speed = 50
+                else:
+                    speed = 100
+                
+                bus.write_byte(0x1a, speed)
+                print(f"Temp: {temp}°C, Fan: {speed}%")
+            except Exception as e:
+                print(f"Error: {e}")
+            
+            time.sleep(30)
+      '';
+    };
+  };
+}

hosts/rpi4/hardware-configuration.nix

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+{ config, lib, pkgs, modulesPath, ... }:
+{
+  imports =
+    [ (modulesPath + "/installer/scan/not-detected.nix")
+    ];
+  boot.initrd.availableKernelModules = [ "xhci_pci" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ ];
+  boot.extraModulePackages = [ ];
+  fileSystems."/" =
+    { device = "/dev/disk/by-uuid/44444444-4444-4444-8888-888888888888";
+      fsType = "ext4";
+    };
+  fileSystems."/storage" =
+    { device = "/dev/disk/by-label/STORAGE";
+      fsType = "ext4";
+      options = [ "nofail" ];
+    };
+  swapDevices = [
+    { device = "/swapfile";
+      size = 4096;
+    }
+  ];
+  nixpkgs.hostPlatform = lib.mkDefault "aarch64-linux";
+  hardware.i2c.enable = true;
+}