Added gnome config to jupiter

machines/jupiter/configuration.nix

@@ -9,7 +9,48 @@
   ];
 
   networking.hostName = "jupiter";
+  
+  boot.loader.grub = {
+    enable = true;
+    device = "/dev/nvme0n1";
+    useOSProber = true;
+  };
 
+  # Enable the X11 windowing system.
+  services.xserver.enable = true;
+
+  # Enable the GNOME Desktop Environment.
+  services.xserver.displayManager.gdm.enable = true;
+  services.xserver.desktopManager.gnome.enable = true;
+
+  # Configure keymap in X11
+  services.xserver = {
+    layout = "de";
+    xkbVariant = "";
+  };
+
+  # Configure console keymap
+  console.keyMap = "de";
+
+  # Enable CUPS to print documents.
+  services.printing.enable = true;
+
+  # Enable sound with pipewire.
+  sound.enable = true;
+  hardware.pulseaudio.enable = false;
+  security.rtkit.enable = true;
+  services.pipewire = {
+    enable = true;
+    alsa.enable = true;
+    alsa.support32Bit = true;
+    pulse.enable = true;
+    # If you want to use JACK applications, uncomment this
+    #jack.enable = true;
+
+    # use the example session manager (no others are packaged yet so this is enabled by default,
+    # no need to redefine it in your config for now)
+    #media-session.enable = true;
+  };
 
   system = {
     stateVersion = "23.05";