pkgs/openwrt: switch sshScript to installing the image

nix/pkgs/openwrt/default.nix

@@ -11,26 +11,21 @@ let
       "kmod-ath10k" "ath10k-firmware-qca988x"
     ];
   };
-in  
-{
-  sshScript = hostName: ''
-    #! ${pkgs.runtimeShell} -e
+in rec {
+  sshScript = hostName:
+    let
+      address = config.site.net.mgmt.hosts4.${hostName};
+    in ''
+      #! ${pkgs.runtimeShell} -e
 
-    ${if config.site.hosts.${hostName}.firstboot
-      then ''
-        ssh-keygen -R 192.168.1.1
-        ssh root@192.168.1.1 \
-          "ash -e -x" <<__SSH__
-      '' else ''
-        ssh root@${config.site.net.mgmt.hosts4.${hostName}} \
-          "ash -e -x" <<__SSH__
-        ${uciConfig hostName}
-        __SSH__
+      ssh root@${address} "cat > /tmp/openwrt-image" < ${buildImage hostName}/openwrt-*-${hostName}-*-sysupgrade.bin
+      ssh root@${address} "sysupgrade -n /tmp/openwrt-image"
 
-        echo "Base configuration done \\o/"
-        echo "Later run: ap_install_collectd.sh ${config.site.net.mgmt.hosts4.${hostName}}"
-      ''}
-  '';
+      # ssh hostkey will have changed after boot
+      ssh-keygen -R ${address}
+
+      /run/wrappers/bin/ping ${address}
+    '';
 
   buildImage = hostName:
     let