Update `aaru` input.

flake.nix

@@ -286,6 +286,61 @@
         ];
       };
 
+      my_nixos_vm = nixpkgs.lib.nixosSystem {
+        system = "x86_64-linux";
+        modules = [
+          ./system/my_nixos_vm/configuration.nix
+          # ./system/dotnet_os_codename-workaround.nix
+            # Source of this fix file is
+            # https://github.com/nazarewk-iac/nix-configs
+            #   /modules/ascii-workaround.nix
+          ./system/nix_lix.nix
+          ./system/users.nix
+          lix-module.nixosModules.default
+          home-manager.nixosModules.home-manager
+          {
+            system.configurationRevision = self.shortRev or self.dirtyShortRev or "dirty";
+
+            users.users.whovian = {
+              openssh.authorizedKeys.keys = mySSHKeys;
+            };
+
+            environment.shells = [
+              pkgs.zsh
+            ];
+
+            home-manager = {
+              useGlobalPkgs = true;
+              useUserPackages = true;
+
+              users = {
+                whovian = {
+                  imports = [
+                    ./home/home.nix
+                    agenix.homeManagerModules.default
+                    nix-index-database.hmModules.nix-index
+                  ];
+                };
+              };
+
+              # Optionally, use home-manager.extraSpecialArgs to pass arguments
+                # to home.nix
+              extraSpecialArgs = {
+                system = "x86_64-linux";
+                inherit aaru;
+                inherit xil;
+                inherit nixpkgs;
+                pkgs = import nixpkgs {
+                  system = "x86_64-linux";
+                  config.allowUnfree = true;
+                };
+                inherit agenix;
+              };
+            };
+          }
+        ];
+      };
+
       /*
         nixps = nixpkgs.lib.nixosSystem {
           system = "x86_64-linux";

system/my_nixos_vm/configuration.nix

@@ -0,0 +1,44 @@
+{
+  lib,
+  pkgs,
+  config,
+  modulesPath,
+  ...
+}:
+
+{
+  imports = [
+    ./packages.nix
+  ];
+
+  networking.hostName = "my_nixos_vm";
+
+  # Enable nix flakes
+  nix.settings.experimental-features = [
+    "nix-command"
+    "flakes"
+  ];
+
+  time.timeZone = "America/New_York";
+
+  /*
+    Add environment.pathsToLink for auto-completion for system packages (e.g. systemd).
+    Appears to be required due to [GitHub - nix-community/home-manager]:
+    https://github.com/nix-community/home-manager/blob/c781b28add41b74423ab2e64496d4fc91192e13a/modules/programs/zsh.nix#L348-L358
+      [/modules/programs/zsh.nix]
+    https://github.com/nix-community/home-manager/issues/3521#issuecomment-1367197995
+      [Issue #3521]
+
+    06 June 2024:
+    Appears to be handled by "programs.zsh.enableCompletion" being enabled.
+    https://github.com/NixOS/nixpkgs/blob/49f6869f71fb2724674ccc18670bbde70843d43f/nixos/modules/programs/zsh/zsh.nix#L305
+    I appear to have "programs.zsh.enableCompletion" disabled for some reason?
+    Need to look into this again at some point, I suppose.
+  */
+
+  environment.pathsToLink = [
+    "/share/zsh"
+  ];
+
+  system.stateVersion = "22.05";
+}

system/my_nixos_vm/packages.nix

@@ -0,0 +1,30 @@
+{ lib, agenix, pkgs, config, modulesPath, ... }:
+{
+  environment.systemPackages = [
+    pkgs.file
+    pkgs.xterm
+    # `agenix` is currently added via
+    # home-manager's `home.packages`
+  ];
+
+
+  nixpkgs = {
+    config = {
+      allowUnfree = true;
+    };
+  };
+
+  programs = {
+    zsh = {
+      enable = true;
+    };
+    nano = {
+      enable = true;
+    };
+
+    screen = {
+      enable = true;
+    };
+
+  };
+}