move all hacs modules to packages

systems/x86_64-linux/nuc/default.nix

@@ -0,0 +1,60 @@
+{
+  config,
+  pkgs,
+  lib,
+  inputs,
+  namespace,
+  ...
+}:
+{
+  imports = [
+    ./boot.nix
+    ./networking.nix
+    ./users.nix
+    ./sops.nix
+
+    # ../../modules/homeassistant/homeassistant.nix
+  ];
+
+  security.tpm2 = {
+    enable = true;
+  };
+
+  ${namespace}.services.home-assistant.enable = true;
+
+  # Enable nix flakes and nix-command tools
+  nix = {
+    settings = {
+      substituters = [
+        "https://nix-community.cachix.org"
+        "https://cache.nixos.org/"
+      ];
+      trusted-public-keys = [
+        "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
+      ];
+      warn-dirty = lib.mkForce false;
+      experimental-features = lib.mkForce [
+        "nix-command"
+        "flakes"
+      ];
+      trusted-users = [ "@wheel" ];
+    };
+
+    # Garbage collect automatically every week
+    gc.automatic = lib.mkDefault true;
+    gc.options = lib.mkDefault "--delete-older-than 30d";
+
+    optimise.automatic = lib.mkDefault true;
+  };
+
+  # Nixpkgs configuration
+  nixpkgs = {
+    config = {
+      allowUnfree = lib.mkForce true;
+      allowUnsupportedSystem = true;
+      permittedInsecurePackages = [
+        # ...
+      ];
+    };
+  };
+}