Setup mail server and restructure some things

config/nixos-generators/default.nix

@@ -0,0 +1,35 @@
+{ ... }:
+{
+  boot.loader.grub = {
+    enable = true;
+    device = "/dev/vda";
+  };
+
+  networking = {
+    hostName = "base";
+    firewall.enable = true;
+  };
+
+  proxmox = {
+    qemuConf = {
+      ostype = "l26";
+      cores = 2;
+      memory = 1024;
+      bios = "seabios";
+      # Option not available in 23.05
+      # diskSize = "8096";
+      virtio0 = "local-zfs:base-disk-0,discard=on";
+      boot = "order=virtio0";
+      net0 = "tag=999,virtio=00:00:00:00:00:00,bridge=vmbr0,firewall=1";
+      agent = true;
+    };
+    qemuExtraConf = {
+      cpu = "cputype=host,flags=+aes";
+      onboot = 1;
+      machine = "q35";
+      template = 1;
+    };
+  };
+
+  system.stateVersion = "23.05";
+}