cornflower: Initialize

This is a Raspberry Pi 4B.

hosts/linux/cornflower/configuration.nix

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+# TODO(spotlightishere): Find a better way to disable desktop-specific components 
+{ config, lib, pkgs, ... }:
+
+{
+  imports = [
+    ./hardware-configuration.nix
+  ];
+
+  boot.loader = {
+    # Use the extlinux boot loader. (NixOS wants to enable GRUB by default)
+    grub.enable = false;
+    # Enables the generation of /boot/extlinux/extlinux.conf
+    generic-extlinux-compatible.enable = true;
+  };
+
+  # We want to ensure flakes, new Nix commands,
+  # and Garnix are available across all installs.
+  nix.settings = {
+    experimental-features = [ "flakes" "nix-command" ];
+    trusted-users = [ "spotlight" ];
+    builders-use-substitutes = true;
+
+    # Include Garnix
+    substituters = [ "https://cache.garnix.io" ];
+    trusted-public-keys = [ "cache.garnix.io:CTFPyKSLcx5RMJKfLo5EEPUObbA78b0YQ2DTCJXqr9g=" ];
+  };
+
+  # We generally want these network preferences across all installs.
+  networking = {
+    hostName = "cornflower";
+    domain = "host.fox-int.cloud";
+    networkmanager = {
+      enable = true;
+      # https://wiki.nixos.org/wiki/NixOS_on_ARM/Raspberry_Pi_4#Networking
+      wifi.powersave = false;
+    };
+
+    nameservers = [
+      # Quad9
+      "2620:fe::fe"
+      "9.9.9.9"
+      # Cloudflare
+      "2606:4700:4700::1111"
+      "1.1.1.1"
+    ];
+  };
+
+  # Similarly, enforce baseline localisation.
+  time.timeZone = "America/Chicago";
+  i18n.defaultLocale = "en_US.UTF-8";
+
+  # We'd like Bonjour available.
+  services = {
+    avahi = {
+      enable = true;
+      # Enable .local resolution
+      nssmdns4 = true;
+    };
+    openssh = {
+      enable = true;
+      openFirewall = true;
+      settings = {
+        PasswordAuthentication = false;
+        PermitRootLogin = "no";
+      };
+    };
+  };
+
+  # Our user!
+  users.users.spotlight = {
+    isNormalUser = true;
+    extraGroups = [ "wheel" ];
+    openssh.authorizedKeys.keys = [
+      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPQQO+c8ygVzRt55Z9qekqItSjYiw381cFPOqX+vGAGT MacBook Air 2020 macOS"
+      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJ/gyX9b80oml6z3UGOxVMJk/NS8R5w9NEITJcKb0MnU MacBook Air 2020 NixOS"
+      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAICpZtyCO6581/FdJHqSTXiFZ2XcxmUudP3sw7jjTzLiN Termius"
+    ];
+    shell = pkgs.zsh;
+  };
+
+  # At a minimum, we'd like ZSH available.
+  programs.zsh.enable = true;
+
+  # Common utilities across most Linux installs.
+  environment.systemPackages = with pkgs; [
+    htop
+    git
+    neofetch
+    tmux
+    usbutils
+    vim
+    wget
+  ];
+
+  # Please do not change this without reviewing release notes upstream. 
+  system.stateVersion = "25.05"; # Did you read the comment?
+}
+

hosts/linux/cornflower/hardware-configuration.nix

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+# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports =
+    [
+      (modulesPath + "/installer/scan/not-detected.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    {
+      device = "/dev/disk/by-uuid/44444444-4444-4444-8888-888888888888";
+      fsType = "ext4";
+    };
+
+  swapDevices = [ ];
+
+  # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
+  # (the default) this is the recommended approach. When using systemd-networkd it's
+  # still possible to use this option, but it's recommended to use it in conjunction
+  # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
+  networking.useDHCP = lib.mkDefault true;
+  # networking.interfaces.end0.useDHCP = lib.mkDefault true;
+  # networking.interfaces.wlan0.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "aarch64-linux";
+}