Init

nixos/default.nix

@@ -0,0 +1,53 @@
+{ config, pkgs, inputs, self, primaryUser, ... }:
+
+{
+  imports = [
+    ./hardware.nix
+    ./settings.nix
+    ./packages.nix
+  ];
+
+  nixpkgs.config.allowUnfree = true;
+  
+  networking = {
+  	hostName = "rpi-4";
+  	networkmanager.enable = true;
+  };
+  
+  # SSH configuration
+  services.openssh = {
+    enable = true;
+    settings.PermitRootLogin = "no";
+    settings.PasswordAuthentication = true;
+  };
+
+  # User configuration
+  users.users.${primaryUser} = {
+    isNormalUser = true;
+    home = "/home/${primaryUser}";
+    description = "Phil";
+    extraGroups = [ "wheel" "networkmanager" ];
+    shell = pkgs.fish;
+  };
+
+  # Shell
+  programs.zsh.enable = true;
+  programs.fish.enable = true;
+
+  # Nix settings
+  nix = {
+    settings = {
+      experimental-features = [ "nix-command" "flakes" ];
+      auto-optimise-store = true;
+      builders = "ssh://phil@192.168.2.40 aarch64-linux";
+      builders-use-substitutes = true;
+    };
+    gc = {
+      automatic = true;
+      dates = "weekly";
+      options = "--delete-older-than 30d";
+    };
+  };
+
+  system.stateVersion = "24.11";
+}

nixos/hardware.nix

@@ -0,0 +1,34 @@
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports = [
+    (modulesPath + "/installer/sd-card/sd-image-aarch64.nix")
+  ];
+
+  # Bootloader
+  boot = {
+  	kernelPackages = pkgs.linuxPackages_rpi4;
+	initrd.availableKernelModules = [ "xhci_pci" "usbhid" "usb_storage" ];
+	loader.generic-extlinux-compatible.enable = true;
+  	kernelParams = [ "console=ttyS0,115200n8" ];
+  };
+
+  # File systems
+  fileSystems."/" = {
+    device = "/dev/disk/by-label/NIXOS_SD";
+    fsType = "ext4";
+    options = [ "noatime" ];
+  };
+
+  # Swap
+  swapDevices = [{
+    device = "/swapfile";
+    size = 4096;
+  }];
+
+  # RPi 4 specific hardware
+  hardware.enableRedistributableFirmware = true;
+
+  # SD Image
+  image.baseName = "nixos-rpi4";
+}

nixos/packages.nix

@@ -0,0 +1,19 @@
+{ config, pkgs, ... }:
+
+{
+  environment.systemPackages = with pkgs; [
+    git
+    curl
+    wget
+    htop
+    neovim
+    tmux
+    ripgrep
+    fd
+    bat
+    eza
+    fzf
+    tree
+    fish
+  ];
+}

nixos/settings.nix

@@ -0,0 +1,21 @@
+{ config, pkgs, ... }:
+
+{
+  # Localization
+  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";
+  };
+
+  # System settings
+  console.keyMap = "de";
+}