refactor(reverse-proxy): use route registry

flake.nix

@@ -392,10 +392,20 @@
                 };
               };
               testConfig =
-                (self.nixosConfigurations.pikachu.extendModules {
+                (lib.nixosSystem {
-                  specialArgs.registry = registry;
+                  system = "x86_64-linux";
+                  specialArgs = {
+                    my = self.lib;
+                    inherit registry;
+                  };
+                  modules = [
+                    ./modules/reverse-proxy.nix
+                    {
+                      modules.reverse-proxy.enable = true;
+                    }
+                  ];
                 }).config;
-              vhosts = testConfig.containers.reverse-proxy.config.services.nginx.virtualHosts;
+              vhosts = testConfig.services.nginx.virtualHosts;
             in
             pkgs.runCommand "reverse-proxy-fleet-routes-check" { } ''
               ${
@@ -449,10 +459,12 @@
                         address = "10.23.20.126";
                         reverseProxy = {
                           enable = true;
-                          host = "files.alexion.dev";
+                          route = {
+                            domain = "files.alexion.dev";
                             port = 3923;
                           };
                         };
+                      };
                       system.stateVersion = "26.11";
                     }
                   ];

hosts/pikachu/default.nix

@@ -87,10 +87,12 @@
     address = "10.23.20.42";
     reverseProxy = {
       enable = true;
-      host = "budget.alexion.dev";
+      route = {
+        domain = "budget.alexion.dev";
         port = 5006;
       };
     };
+  };
 
   guests.reverse-proxy = {
     enable = true;
@@ -107,8 +109,10 @@
     address = "10.23.20.126";
     reverseProxy = {
       enable = true;
-      host = "files.alexion.dev";
+      route = {
+        domain = "files.alexion.dev";
         port = 3923;
+      };
       trustedSources = [ "${registry.address.${config.networking.hostName}."reverse-proxy"}/32" ];
     };
     volumes = {

lib/guests.nix

@@ -20,7 +20,7 @@ let
       name,
       interior ? { },
     }:
-    { config, lib, ... }@args:
+    { config, lib, ... }:
     let
       optionPath = [ "guests" ] ++ lib.splitString "." name;
       cfg = lib.getAttrFromPath optionPath config;
@@ -132,15 +132,9 @@ let
         reverseProxy = {
           enable = lib.mkEnableOption "a reverse-proxy route for this guest";
 
-          host = lib.mkOption {
+          route = lib.mkOption {
-            type = lib.types.str;
+            type = self.lib.registry.definitions.route.type;
-            description = "Primary hostname served by this guest's reverse-proxy route.";
+            description = "Route registry entry published for this guest.";
-          };
-
-          port = lib.mkOption {
-            type = lib.types.ints.between 1 65535;
-            example = 3923;
-            description = "Backend TCP port served by this guest.";
           };
         };
         mounts = lib.mkOption {
@@ -288,10 +282,7 @@ let
 
         registry.address.${config.networking.hostName}.${machineName} = lib.mkIf (cfg.address != null) cfg.address;
 
-        registry.route.${config.networking.hostName}.${machineName} = lib.mkIf cfg.reverseProxy.enable {
+        registry.route.${config.networking.hostName}.${machineName} = lib.mkIf cfg.reverseProxy.enable cfg.reverseProxy.route;
-          domain = cfg.reverseProxy.host;
-          inherit (cfg.reverseProxy) port;
-        };
 
         assertions = [
           {
@@ -351,7 +342,7 @@ let
 
           bindMounts = userMounts // secretMounts;
 
-          specialArgs = specialArgs // lib.optionalAttrs (args ? registry) { inherit (args) registry; };
+          inherit specialArgs;
 
           config = {
             imports = [