[SiriusA] Adds configuration. [MCP] Cleans up config file.

system/hosts/sirius-a/configuration.nix

@@ -0,0 +1,76 @@
+{
+  pkgs,
+  ...
+}:
+
+{
+  imports = [
+    ./gandicloud.nix
+  ];
+
+  networking = {
+    hostName = "sirius-a"; # Define your hostname.
+
+    # Enable networking
+    networkmanager.enable = true;
+    # Disable wpa-supplicant to avoid conflicts with network manager.
+    wireless.enable = false;
+
+    firewall.allowedTCPPorts = [ 22 ];
+  };
+
+  # Enable the OpenSSH daemon.
+  services.openssh.enable = true;
+
+  # Set your time zone.
+  time.timeZone = "America/Los_Angeles";
+
+  # Select internationalisation properties.
+  i18n.defaultLocale = "en_US.UTF-8";
+
+  i18n.extraLocaleSettings = {
+    LC_ADDRESS = "en_US.UTF-8";
+    LC_IDENTIFICATION = "en_US.UTF-8";
+    LC_MEASUREMENT = "en_US.UTF-8";
+    LC_MONETARY = "en_US.UTF-8";
+    LC_NAME = "en_US.UTF-8";
+    LC_NUMERIC = "en_US.UTF-8";
+    LC_PAPER = "en_US.UTF-8";
+    LC_TELEPHONE = "en_US.UTF-8";
+    LC_TIME = "en_US.UTF-8";
+  };
+
+  programs.zsh.enable = true;
+
+  # Define a user account. Don't forget to set a password with ‘passwd’.
+  users.users.drew = {
+    isNormalUser = true;
+    description = "Drew Haven";
+    extraGroups = [
+      "networkmanager"
+      "wheel"
+      "docker-registry"
+      "docker"
+    ];
+    shell = pkgs.zsh;
+    # Enable linger so that systemd services run for this user are started and
+    # persist even without an active session.
+    linger = true;
+  };
+
+  security.sudo = {
+    enable = true;
+
+    extraConfig = ''
+      Defaults:root,%wheel timestamp_timeout=30
+    '';
+  };
+
+  system.stateVersion = "24.11"; # Did you read the comment?
+
+  # Enable flakes
+  nix.settings.experimental-features = [
+    "nix-command"
+    "flakes"
+  ];
+}