plugins/flutter-tools: add warnings for dap integration

Author: GaetanLepage

plugins/by-name/flutter-tools/default.nix

@@ -18,6 +18,18 @@ lib.nixvim.plugins.mkNeovimPlugin {
   };
   extraConfig = cfg: {
     extraPackages = [ cfg.flutterPackage ];
+
+    warnings =
+      lib.optional
+        (
+          (cfg.settings ? debugger.enable)
+          && (lib.isBool cfg.settings.debugger.enable)
+          && cfg.settings.debugger.enable
+          && (!config.plugins.dap.enable)
+        )
+        ''
+          Nixvim (plugins.flutter-tools): You have enabled the dap integration (`settings.debugger.enable`) but `plugins.dap` is disabled.
+        '';
   };
 
   settingsOptions = import ./settings-options.nix lib;