feat: add host PABU

hosts/PABU/default.nix

@@ -0,0 +1,42 @@
+{ lib, pkgs, modulesPath, ... }: {
+  imports = [ (modulesPath + "/profiles/minimal.nix") ];
+
+  # Installing a new system within the nspawn means that the /sbin/init script
+  # just needs to be updated, as there is no bootloader.
+  system.build.installBootLoader = pkgs.writeScript "install-sbin-init.sh" ''
+    #!${pkgs.runtimeShell}
+    ${pkgs.coreutils}/bin/ln -fs "$1/init" /sbin/init
+  '';
+
+  system.activationScripts.installInitScript = lib.mkForce ''
+    ${pkgs.coreutils}/bin/ln -fs $systemConfig/init /sbin/init
+  '';
+
+  boot.isContainer = true;
+  networking.hostName = "PABU";
+
+  nix = {
+    settings = {
+      experimental-features = [ "nix-command" "flakes" ];
+      auto-optimise-store = true;
+    };
+  };
+
+  users.groups.gandalf = {
+    gid = 1000;
+  };
+
+  users.users.gandalf = {
+    isNormalUser = true;
+    home = "/home/gandalf";
+    createHome = true;
+    group = "gandalf";
+    extraGroups = [ "wheel" ];
+  };
+
+  security.sudo.wheelNeedsPassword = false;
+
+  environment.systemPackages = with pkgs; [ git neovim ];
+
+  system.stateVersion = "24.05";
+}