wifi: Fix wifi_apply failing on boot

hm/rebuild/default.nix

@@ -13,6 +13,7 @@
         nixos_flake="$(readlink -f /etc/nixos)"
         if [ -f "$nixos_flake/flake.nix" ]
         then
+          # TODO For extensions this only works on systems where the flake has been resolved
           nix run "$nixos_flake#updateLocalFlakes" -- "$nixos_flake"
           nix run "$nixos_flake#nixosRebuild" -- "$verb" "$@"
         fi

os/wireless/apply.py

@@ -1,4 +1,6 @@
 """
+Add the networks saved in wireless_networks to wpa_supplicant,
+without restarting it or touching its config file.
 """
 
 import json

os/wireless/default.nix

@@ -70,6 +70,9 @@ in
     after = [ "wpa_supplicant.service" ];
     wantedBy = [ "wpa_supplicant.service" ];
     path = with pkgs; [ wpa_supplicant ];
-    script = "${applyScript}";
+    script = ''
+        for i in {1..10}; do wpa_cli status &> /dev/null && break; done
+        ${applyScript}
+    '';
   };
 }