chore: baseline nixos for proxmox configuration

hosts/unstable/builder2/default.nix

@@ -1,19 +1,60 @@
-{ config, modulesPath, pkgs, lib, ... }:
 {
-  imports = [ (modulesPath + "/virtualisation/proxmox-lxc.nix") ];
-  nix.settings = { sandbox = false; };  
-  proxmoxLXC = {
-    manageNetwork = false;
-    privileged = true;
+  config,
+  metadata,
+  modulesPath,
+  ...
+}:
+{
+  # Then build nixosConfiguration.<host>.config.system.build.images.proxmox
+  # SCP that to /var/lib/vz/dumps on the Proxmox host
+  imports = [ "${modulesPath}/virtualisation/proxmox-image.nix" ];
+  greg = {
+    home = true;
+    nebula.enable = true;
   };
-  services.fstrim.enable = false; # Let Proxmox host handle fstrim
-  services.openssh = {
-    enable = true;
-    openFirewall = true;
-    settings = {
+  networking = {
+    defaultGateway = metadata.infra.gw;
+    nameservers = [ metadata.infra.dns ];
+    interfaces.ens18 = {
+      useDHCP = false;
+      ipv4.addresses = [
+        {
+          address = metadata.hosts."${config.networking.hostName}".ip;
+          prefixLength = 16;
+        }
+      ];
+    };
+  };
+  virtualisation.diskSize = 20480; # Size in mebbibytes for the base disk image
+  # Use these instead of the above to run an LXC image
+  # The main reason I wouldn't use these is because Proxmox LXC does
+  # not seem to be well supported by either Nebula VPN or Tailscale,
+  # both of which I use for my mesh networking. If there isn't a need
+  # for the service to run on those networks, then by all means go ahead
+  # and use LXC!
+  # imports = [ (modulesPath + "/virtualisation/proxmox-lxc.nix") ];
+  # proxmoxLXC = {
+  #   manageNetwork = false;
+  #   privileged = true;
+  # };
+  # systemd.suppressedSystemUnits = [
+  #   "dev-mqueue.mount"
+  #   "sys-kernel-debug.mount"
+  #   "sys-fs-fuse-connections.mount"
+  # ];
+  nix.settings = {
+    sandbox = false;
+  };
+  services = {
+    fstrim.enable = false; # Let Proxmox host handle fstrim
+    openssh = {
+      enable = true;
+      openFirewall = true;
+      settings = {
         PermitRootLogin = "yes";
         PasswordAuthentication = true;
         PermitEmptyPasswords = "yes";
+      };
     };
   };
 }