nix(module): module boilerplate

default.nix

@@ -25,14 +25,14 @@
 }:
 pkgs.stdenv.mkDerivation rec {
   pname = "tildefriends";
-  version = "0.0.27.1";
+  version = "0.0.28";
 
   src = pkgs.fetchFromGitea {
     domain = "dev.tildefriends.net";
     owner = "cory";
     repo = "tildefriends";
-    rev = "v${version}";
-    hash = "sha256-3t1m9ZomQF3DteWyALJWrnCq0EAROEK8shKXh6Ao38c=";
+    rev = "f02423d0846fefd5ab21fa4542fb77ce5714547c";
+    hash = "sha256-QyM7wmViXJc4r8uTu4oE/HO3Z9tzNbFIX2+AOTQz9ZY=";
     fetchSubmodules = true;
   };
 

flake.nix

@@ -35,5 +35,27 @@
             graphviz
           ];
         };
+
+        nixosModules.default = {
+          config,
+          lib,
+          ...
+        }: let
+          # Shorter name to access final settings a
+          # user of hello.nix module HAS ACTUALLY SET.
+          # cfg is a typical convention.
+          cfg = config.services.tildefriends;
+        in {
+          options.services.tildefriends = {
+            enable = lib.mkEnableOption "Enable Tilde Friends";
+          };
+
+          config = lib.mkIf cfg.enable {
+            systemd.services.tildefriends = {
+              wantedBy = ["multi-user.target"];
+              serviceConfig.ExecStart = "${pkgs.tildefriends}/bin/tildefriends";
+            };
+          };
+        };
       });
 }