Add config for nix-builder

systems/x86_64-linux/nix-builder/default.nix

@@ -0,0 +1,111 @@
+# sudo nixos-rebuild switch --flake .#nix-builder --target-host root@192.168.3.118
+
+# Edit this configuration file to define what should be installed on
+# your system.  Help is available in the configuration.nix(5) man page
+# and in the NixOS manual (accessible by running ‘nixos-help’).
+
+{ config, pkgs, ... }:
+
+{
+  imports = [ # Include the results of the hardware scan.
+    ./hardware-configuration.nix
+  ];
+
+  # Bootloader.
+  boot.loader.grub.enable = true;
+  boot.loader.grub.device = "/dev/sda";
+  boot.loader.grub.useOSProber = true;
+
+  boot.binfmt.emulatedSystems = [ "aarch64-linux" ];
+
+  networking.hostName = "nix-builder"; # Define your hostname.
+
+  # Enable networking
+  networking.networkmanager.enable = true;
+
+  # Set your time zone.
+  time.timeZone = "Europe/Berlin";
+
+  # Select internationalisation properties.
+  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";
+  };
+
+  # Configure keymap in X11
+  services.xserver = {
+    layout = "de";
+    xkbVariant = "";
+  };
+
+  # Configure console keymap
+  console.keyMap = "de";
+
+  # Define a user account. Don't forget to set a password with ‘passwd’.
+  users.users.nix = {
+    isNormalUser = true;
+    description = "Nix";
+    extraGroups = [ "networkmanager" "wheel" ];
+    packages = with pkgs; [ ];
+  };
+
+  nix.settings.trusted-users = [ "@wheel" ];
+  nix.settings.experimental-features = [ "nix-command" "flakes" ];
+
+  # Setup binary caches
+  nix.settings = {
+    substituters =
+      [ "https://nix-community.cachix.org" "https://cache.nixos.org/" ];
+    trusted-public-keys = [
+      "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
+    ];
+  };
+
+  # optimize store by hardlinking store files
+  nix.optimise.automatic = true;
+  nix.optimise.dates = [ "03:15" ];
+
+  nix.gc.automatic = true;
+  nix.gc.dates = "weekly";
+  nix.gc.options = "--delete-older-than 30d";
+
+  # Garbage collect up to 30 GiB when only 5 GiB storage left
+  nix.extraOptions = ''
+    min-free = ${toString (5 * 1024 * 1024 * 1024)}
+    max-free = ${toString (30 * 1024 * 1024 * 1024)}
+    min-free-check-interval = 60
+  '';
+
+  # List packages installed in system profile. To search, run:
+  # $ nix search wget
+  environment.systemPackages = with pkgs; [ vim htop mc ];
+
+  # Enable the OpenSSH daemon.
+  services.openssh.enable = true;
+
+  security.pam.enableSSHAgentAuth = true; # enable sudo logins via ssh
+
+  # Open ports in the firewall.
+  # networking.firewall.allowedTCPPorts = [ ... ];
+  # networking.firewall.allowedUDPPorts = [ ... ];
+  # Or disable the firewall altogether.
+  # networking.firewall.enable = false;
+
+  # This value determines the NixOS release from which the default
+  # settings for stateful data, like file locations and database versions
+  # on your system were taken. It‘s perfectly fine and recommended to leave
+  # this value at the release version of the first install of this system.
+  # Before changing this value read the documentation for this option
+  # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
+  system.stateVersion = "23.11"; # Did you read the comment?
+
+}

systems/x86_64-linux/nix-builder/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 + "/profiles/qemu-guest.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ "ata_piix" "uhci_hcd" "virtio_pci" "virtio_scsi" "sd_mod" "sr_mod" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "/dev/disk/by-uuid/f088fe8e-bf3d-4a89-98bd-ead9852d381f";
+      fsType = "ext4";
+    };
+
+  swapDevices =
+    [ { device = "/dev/disk/by-uuid/ab60b5f0-caaa-4a7e-803f-c4c1a6a076dd"; }
+    ];
+
+  # 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.ens18.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+}