Move web-service-modules into a separate directory

modules/system/webServices/memos.nix

@@ -0,0 +1,59 @@
+{
+  config,
+  options,
+  modulesPath,
+  inputs,
+  pkgs-unstable,
+  lib,
+  ...
+}:
+let
+  cfg = config.custom.services.memos;
+
+  dataDir = config.services.memos.settings.MEMOS_DATA;
+in
+{
+  imports = [ "${inputs.nixpkgs-unstable}/nixos/modules/services/misc/memos.nix" ];
+
+  options.custom.services.memos = {
+    enable = lib.mkEnableOption "";
+    domain = lib.mkOption {
+      type = lib.types.nonEmptyStr;
+      default = "";
+    };
+    port = lib.mkOption {
+      type = lib.types.port;
+      default = 5230;
+    };
+    doBackups = lib.mkEnableOption "";
+  };
+
+  config = lib.mkIf cfg.enable {
+    warnings =
+      lib.optional (lib.pathExists "${modulesPath}/services/misc/memos.nix") "TODO: Use memos module from stable nixpkgs"
+      ++ lib.optional (lib.versionAtLeast lib.version "25.11") "TODO: Use memos package from stable nixpkgs";
+
+    meta = {
+      domains.list = [ cfg.domain ];
+      ports.tcp.list = [ cfg.port ];
+    };
+
+    services.memos = {
+      enable = true;
+      package = pkgs-unstable.memos;
+      settings = options.services.memos.settings.default // {
+        MEMOS_PORT = toString cfg.port;
+        MEMOS_INSTANCE_URL = "https://${cfg.domain}";
+      };
+    };
+
+    custom = {
+      services.resticBackups.memos = lib.mkIf cfg.doBackups {
+        conflictingService = "memos.service";
+        paths = [ dataDir ];
+      };
+
+      persist.directories = [ dataDir ];
+    };
+  };
+}