Infini-DL360/ssh: setup X11 Forwarding

hosts/Infini-DL360/ssh.nix

@@ -61,9 +61,17 @@ in
     };
   };
 
+  environment.systemPackages = with pkgs; [ xorg.xauth ];
+
   # https://enotacoes.wordpress.com/2021/10/05/limiting-user-to-sshfs-or-sftp-of-one-directory-only/
   # https://github.com/NixOS/nixpkgs/blob/d603719ec6e294f034936c0d0dc06f689d91b6c3/nixos/modules/services/networking/ssh/sshd.nix#L663
   services.openssh.extraConfig = ''
+    XAuthLocation ${pkgs.xorg.xauth}/bin/xauth
+
+    Match user infinidoge
+      X11Forwarding yes
+      X11UseLocalhost no
+
     Match user incoming
       AuthorizedKeysFile /etc/ssh/authorized_keys.d/infinidoge /etc/ssh/authorized_keys.d/%u
       ChrootDirectory /srv/external