diff --git a/config.scm b/config.scm
index a3e57e2..0b68682 100644
--- a/config.scm
+++ b/config.scm
@@ -109,6 +109,12 @@ SUBSYSTEM==\"usb_device\", GROUP=\"spice\", MODE=\"0660\"
     (modify-services  (append  
                         (list 
                           (service gnome-desktop-service-type)
+                          (service openssh-service-type
+                            (openssh-configuration
+                              (x11-forwarding? #t)
+                              (permit-root-login 'prohibit-password)
+                              (authorized-keys
+                                `(("neox" ,(local-file "/home/neox/.ssh/id_rsa.pub"))))))
                           (service cups-service-type
                             (cups-configuration
                               (web-interface? #t)
@@ -135,7 +141,20 @@ SUBSYSTEM==\"usb_device\", GROUP=\"spice\", MODE=\"0660\"
 
     (guix-service-type config => (guix-configuration
       (inherit config)
-      (extra-options '("--cores=10"))))))
+      (extra-options '("--cores=10"))
+      (substitute-urls
+                (append (list "https://substitutes.nonguix.org")
+                  %default-substitute-urls))
+      (authorized-keys
+        (append 
+          (list 
+            (plain-file "non-guix.pub" 
+              (string-append 
+                "(public-key"
+                " (ecc "
+                "  (curve Ed25519)"
+                "  (q #C1FD53E5D4CE971933EC50C9F307AE2171A2D3B52C804642A7A35F84F3A4EA98#)))")))
+            %default-authorized-guix-keys))))))
 
   (bootloader (bootloader-configuration
                 (bootloader grub-efi-bootloader)