add cloudnix config

flake.nix

@@ -130,6 +130,17 @@
         modules = [
           ./hosts/citadel
 
+          home-manager.nixosModules.home-manager
+          {
+            home-manager.extraSpecialArgs = specialArgs;
+          }
+        ];
+      };
+      cloudnix = nixpkgs.lib.nixosSystem {
+        inherit specialArgs;
+        modules = [
+          ./hosts/cloudnix
+
           home-manager.nixosModules.home-manager
           {
             home-manager.extraSpecialArgs = specialArgs;

hosts/cloudnix/default.nix

@@ -0,0 +1,57 @@
+{
+  configVars,
+  outputs,
+  ...
+}: let
+  user = "admin";
+  merlinIp = configVars.networking.addresses.merlin.ip;
+in {
+  imports = [
+    # Create users for this host
+    ../common/users/${user}
+
+    # Import core options
+    ./hardware-configuration.nix
+    ../common/core
+
+    # Import optional options
+    ../common/optional/persistence.nix
+    ../common/optional/openssh.nix
+
+    ../common/optional/distributed-builds/local-machine.nix
+
+    outputs.nixosModules.nixosAutoUpgrade
+  ];
+
+  boot = {
+    loader = {
+      grub.enable = true;
+    };
+  };
+
+  services = {
+    earlyoom = {
+      enable = true;
+      freeMemThreshold = 5; # <%5 free
+    };
+  };
+
+  system.services.nixosAutoUpgrade = {
+    enable = true;
+    persistent = true;
+    remote = "remotebuild@${merlinIp}";
+    reboot = false;
+    pushUpdates = false;
+    configDir = "/etc/nixos";
+    onCalendar = "*-*-* 06:00:00";
+    user = "sam";
+  };
+
+  networking = {
+    hostName = "cloudnix";
+    nameservers = ["8.8.8.8"];
+    firewall.enable = true;
+  };
+
+  services.libinput.enable = true;
+}

hosts/cloudnix/hardware-configuration.nix

@@ -0,0 +1,41 @@
+# 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 = [ "ahci" "xhci_pci" "virtio_pci" "virtio_scsi" "sd_mod" "sr_mod" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "/dev/disk/by-uuid/e12d0dfd-9753-44d4-b65f-dc5549db3edf";
+      fsType = "ext4";
+    };
+
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-uuid/c29f698d-eb89-4618-be8b-046b4907aed8";
+      fsType = "ext4";
+    };
+
+  swapDevices = [
+    {
+      device = "/.swapfile";
+      size = 2 * 1024;
+    }
+  ];
+
+  # 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.enp1s0.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+}