better cloning

configuration.nix

@@ -28,10 +28,13 @@ in
     # appdaemon
   ];
 
-  # Alternatively, use a symlink
-  system.activationScripts.linkAdNix = lib.mkForce ''
-    echo "Linking ad-nix repository to ${adTargetPath}"
-    ln -sfn ${ad_src} ${adTargetPath}
+  system.userActivationScripts.ad-setup.text = ''
+  if [ ! -d ${adTargetPath} ]; then
+    ${pkgs.git}/bin/git clone https://gitea.john-stream.com/john/ad-nix ${adTargetPath}
+    chown -R appdaemon:users ${adTargetPath}
+  else
+    ${pkgs.git}/bin/git -C ${adTargetPath} pull
+  fi
   '';
 
   virtualisation.docker.enable = true;