services/router: init

flake.nix

@@ -48,6 +48,9 @@
         "x86_64-darwin"
       ];
 
+      # perSystem.clan.nixosTests: NixOS VM tests of our own clan services.
+      imports = [ clan-core.flakeModules.testModule ];
+
       flake = {
         inherit (clan.config) nixosConfigurations nixosModules clanInternals;
         clan = clan.config;
@@ -84,6 +87,12 @@
           formatter = treefmtEval.config.build.wrapper;
           checks.formatting = treefmtEval.config.build.check self;
 
+          # `nix build .#checks.x86_64-linux.router` (VM test, Linux only).
+          clan.nixosTests.router = {
+            imports = [ ./modules/clan/router/tests/vm ];
+            clan.modules.router = ./modules/clan/router;
+          };
+
           # Add the Clan cli tool to the dev shell.
           # Use "nix develop" to enter the dev shell.
           devShells.default = pkgs.mkShell {