made adRepo a variable

configuration.nix

@@ -5,6 +5,7 @@ let
   adHome = "/srv/appdaemon";
   adNixPath = "${adHome}/ad-nix";
   adPath = "/usr/src/app";
+  adRepo = "https://github.com/jsl12/appdaemon";
   adBranch = "hass";
 in
 {
@@ -22,15 +23,8 @@ in
       sudo nix-channel --update && sudo nixos-rebuild switch
     '')
     (pkgs.writeShellScriptBin "ad-clone" ''
-      if [ ! -d ${adNixPath} ]; then
-        sudo git clone https://gitea.john-stream.com/john/ad-nix ${adNixPath}
-        sudo chown -R appdaemon:users ${adNixPath}
-      else
-        echo "${adNixPath} already exists"
-      fi
-
       if [ ! -d ${adPath} ]; then
-        sudo git clone -b ${adBranch} https://github.com/jsl12/appdaemon ${adPath}
+        sudo git clone -b ${adBranch} ${adRepo} ${adPath}
         sudo chown -R appdaemon:users ${adPath}
       else
         echo "${adPath} already exists"