roles/server/caddy.nix

@@ -50,9 +50,9 @@ in {
     "${downloadsHostname},everest"
   ];
   systemd = {
-    services.caddy.after = ["tailscaled.service"];
+    units.tailscaled.requiredBy = ["caddy.service"];
     # We have somewhat frequent power outages, and our ISP router takes
-    # ages to boot up. If I don't add a delay, caddy tries to bind to
+    # ages to boot up. If I don't add a delay, traefik tries to bind to
     # the tailscale interface before it's ready, making it crash too much
     # in too little time
     services.caddy.serviceConfig.RestartSec = lib.mkForce "120s";

roles/server/tailscale.nix

@@ -1,21 +1,6 @@
-{pkgs, ...}: let
-  script = pkgs.writeShellApplication {
-    name = "tailscale-wait-for-ip";
-    runtimeInputs = [pkgs.iproute2];
-    text = ''
-      # Based on https://github.com/tailscale/tailscale/issues/11504#issuecomment-2113331262
-      echo Waiting for tailscale0 to get an IP adress..
-      for i in {1..15}; do
-        if ip addr show dev tailscale0 | grep -q 'inet '; then break; fi
-        echo "$i"
-        sleep 1
-      done
-    '';
-  };
-in {
+{...}: {
   services.tailscale = {
     # This is needed for being an exit node
     useRoutingFeatures = "server";
   };
-  systemd.services.tailscaled.postStart = "${script}/bin/tailscale-wait-for-ip";
 }