server: add linode profile init

modules/nixos/server/profiles/linode/base/boot.nix

@@ -0,0 +1,60 @@
+{
+  pkgs,
+  lib,
+  ...
+}: let
+  inherit (lib) mkForce getExe';
+in {
+  boot = {
+    kernelPackages = pkgs.linuxPackages_latest;
+    kernelModules = [];
+    # LISH console support
+    kernelParams = ["console=ttyS0,19200n8"];
+    extraModulePackages = [];
+    growPartition = true;
+    initrd = {
+      availableKernelModules = [
+        # modules generated by nixos-generate-config
+        "virtio_pci"
+        "virtio_scsi"
+        "ahci"
+        "sd_mod"
+
+        # qemu guest modules
+        "virtio_net"
+        "virtio_mmio"
+        "virtio_blk"
+        "virtio_scsi"
+        "9p"
+        "9pnet_virtio"
+      ];
+      kernelModules = [
+        "virtio_balloon"
+        "virtio_console"
+        "virtio_rng"
+        "virtio_gpu"
+      ];
+    };
+    loader = {
+      grub = {
+        enable = true;
+        device = "nodev";
+        forceInstall = true;
+        copyKernels = true;
+        fsIdentifier = "label";
+        splashImage = null;
+        extraConfig = ''
+          serial --speed=19200 --unit=0 --word=8 --parity=no --stop=1;
+          terminal_input serial;
+          terminal_output serial
+        '';
+
+        extraInstallCommands = "${getExe' pkgs.coreutils "ln"} -fs /boot/grub /boot/grub2";
+      };
+      timeout = mkForce 10;
+      # disable base settings
+      efi.canTouchEfiVariables = mkForce false;
+      systemd-boot.enable = mkForce false;
+    };
+  };
+}

modules/nixos/server/profiles/linode/base/default.nix

@@ -0,0 +1,7 @@
+{
+  imports = [
+    ./boot.nix
+    ./networking.nix
+    ./file-system.nix
+  ];
+}

modules/nixos/server/profiles/linode/base/file-system.nix

@@ -0,0 +1,8 @@
+{
+  fileSystems."/" = {
+    device = "/dev/sda";
+    fsType = "ext4";
+    autoResize = true;
+  };
+  swapDevices = [{device = "/dev/sdb";}];
+}

modules/nixos/server/profiles/linode/base/networking.nix

@@ -0,0 +1,12 @@
+{lib, ...}: let
+  inherit (lib) mkForce;
+in {
+  networking = {
+    tempAddresses = "disabled";
+    usePredictableInterfaceNames = mkForce false;
+    interfaces.eth0 = {
+      tempAddress = "disabled";
+      useDHCP = true;
+    };
+  };
+}

modules/nixos/server/profiles/linode/default.nix

@@ -0,0 +1,8 @@
+{
+  imports = [
+    ./image.nix
+    ./base
+  ];
+
+  system.stateVersion = "24.11";
+}

modules/nixos/server/profiles/linode/image.nix

@@ -0,0 +1,23 @@
+{
+  pkgs,
+  lib,
+  inputs,
+  config,
+  ...
+}: let
+  make-disk-image = import "${inputs.nixpkgs}/nixos/lib/make-disk-image.nix";
+in {
+  system.build.image = make-disk-image {
+    inherit lib pkgs config;
+    partitionTableType = "none";
+    name = "linode-image";
+    format = "raw";
+    # Linode requires the image to be gzip'd
+    # unzipped image cannot exceed 6gb
+    postVM = ''
+      ${pkgs.gzip}/bin/gzip -6 -c -- $diskImage > \
+      $out/nixos-image-${config.system.nixos.label}-${pkgs.stdenv.hostPlatform.system}.img.gz
+      rm $diskImage
+    '';
+  };
+}