feat: add initial rpi4 config

flake.nix

@@ -60,6 +60,19 @@
         ];
       };
 
+      nixosConfigurations.felix-rpi4 = nixpkgs.lib.nixosSystem {
+        system = "aarch64-linux";
+        modules = [
+          # nixpkgs.nixosModules.notDetected
+          (import "${nixpkgs}/nixos/modules/installer/cd-dvd/sd-image-raspberrypi4.nix")
+          (systemModule {
+            hostName = "felix-rpi4";
+            hardwareConfig = ./hardware/rpi4.nix;
+            config = ./rpi4.nix;
+          })
+        ];
+      };
+
       homeManagerModules.git = import ./home/modules/git.nix;
 
     } // flake-utils.lib.eachDefaultSystem (system:

hardware/rpi4.nix

@@ -0,0 +1,22 @@
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  boot.initrd.availableKernelModules = [ "usbhid" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-label/NIXOS_BOOT";
+      fsType = "vfat";
+    };
+
+  fileSystems."/" =
+    { device = "/dev/disk/by-label/NIXOS_SD";
+      fsType = "ext4";
+    };
+
+  swapDevices = [ ];
+
+  powerManagement.cpuFreqGovernor = lib.mkDefault "ondemand";
+}

home/felschr-rpi4.nix

@@ -0,0 +1,32 @@
+{ config, pkgs, ... }:
+
+{
+  imports = [
+    ./shell
+    # ./editors
+    ./git.nix
+  ];
+
+  home.packages = with pkgs; [ ncurses ];
+
+  services.gpg-agent = {
+    enable = true;
+    enableSshSupport = true;
+    sshKeys = [ "4AE1DDE05F4BB6C8E220501F1336A98E89836D90" ];
+    defaultCacheTtl = 600;
+    defaultCacheTtlSsh = 600;
+    pinentryFlavor = "curses";
+  };
+
+  programs.gpg.enable = true;
+
+  programs.git.defaultProfile = "private";
+
+  xdg.configFile."nixpkgs/config.nix".text = ''
+    {
+      allowUnfree = true;
+    }
+  '';
+
+  home.stateVersion = "20.09";
+}

rpi4.nix

@@ -0,0 +1,45 @@
+{ config, pkgs, ... }:
+
+{
+  imports = [
+    # ./hardware/base.nix
+    # ./system
+    ./system/nix.nix
+    ./system/i18n.nix
+    ./services/jellyfin.nix
+  ];
+
+  nixpkgs.config.allowUnfree = true;
+
+  # rpi4 base config
+  boot.loader.grub.enable = false;
+  boot.loader.raspberryPi.enable = true;
+  boot.loader.raspberryPi.version = 4;
+  boot.kernelPackages = pkgs.linuxPackages_rpi4;
+  boot.kernelParams = [
+    "console=ttyAMA0,115200"
+    "console=tty1"
+  ];
+  hardware.enableAllFirmware = true;
+
+  programs.zsh.enable = true;
+
+  services.openssh.enable = true;
+
+  users.users.felschr = {
+    isNormalUser = true;
+    extraGroups = [ "wheel" "audio" "disk" ];
+    shell = pkgs.zsh;
+  };
+
+  home-manager = {
+    useUserPackages = true;
+    useGlobalPkgs = true;
+    users.felschr = import ./home/felschr-rpi4.nix;
+  };
+
+  # only change this when specified in release notes
+  system.stateVersion = "20.09";
+
+  system.autoUpgrade.enable = true;
+}